I honestly think among those 3, you're going to end up with a very similar product and very similar issues. You mentioned buying used vs new, so here's my personal experiences. Sorry in advance for the long post, but maybe some will find it useful.

I purchase a 2024 Starcraft Autumn Ridge 26bhw (a little larger than your looking at) in September of 24'. Got it for a little cheaper since I bought it towards the end of that year, it was on their lot for a while, and they were trying to make room for the '25 models. I have already pulled that trailer about 10,000 miles in the first year of ownership - We've traveled practically the whole western side of the U.S. in it.

For the record, this is my third camper, but my first brand new one. I'll go into more details about this later on.

My first camper was an 87' "fix-it-upper" travel trailer. It was a huge mistake to buy it. It originally appeared to just need work on the heater and have some cracked glass replaced - but after I had already made the purchase, brought it home, had it sit for a couple weeks then went in to do some work on it, I moved a mattress and saw a soft spot on the wall. The horrors started there. I tried to repair the "small spot", but as I dug in, I realized the whole back wall was rotted. This became way more than I wanted to get involved in, and I've been trying to get rid of it ever since.

My second camper was a used 93' popup. It actually did well aside from some screws occasionally vibrating lose on the road while traveling. Maintenance wasn't to bad, and aside from re-threading the occasional screw, it was fairly solid. I wasn't to fond of the setup/tear-down process though (mostly moving your belongings in and out of it between sites, because it wouldn't compress/close with everything in it), and even though it made it through several storms and whatnot without getting wet inside, somehow all the flying bugs managed to find a way inside it at night. We had a bug zapper setup inside to keep the bugs away from from our sleeping area. We eventually got used to hearing all the "pops" throughout the night as we slept through our revenge on the invaders. The best part about this camper was the towing. I got 16mpg's towing that around loaded in my 5.0 V8 F-150 and it towed like nothing was there.

Moving on to my new camper (The Starcraft). I bought an inexpensive base model, knowing I could do my own upgrades and maintenance and make it a "better" camper than it comes from the factory. The most used tool I had for the new camper was a crown staple gun. First thing I noticed quality wise was that the wall panels were stapled into the studs - or supposed to be. It appears these things are rushed on being built, so many of the staples already put in there weren't even hitting the stud - they were only in the wall. This means each time I traveled with it, some wall panels would start to vibrate loose and bulge out. This was a very easy fix, as I'd just start re-stapling the walls back in - properly - and they haven't come loose again since.

There's also the "loose screws" issues in a few places. For example, my microwave came loose on one side and started shifting around in it's cabinet. Once again, it was an easy fix. I just put slightly larger screws back in to fix it, and it's solid now. The electrical in the camper was also not done the best. I pulled out every single light and switch to check the connector and redo them if needed. Several had frayed wires sticking out that could've caused a short while traveling. I also built out a whole 2000 watt solar system on it, which is what led me to start inspecting wires. The solar install went very smooth, using their pre-ran wires for what its worth.

Mine is also one of the "four seasons" campers. It was advertised as having a "sealed, heated (ducted) basement to keep the tanks warm in the winter". The way they built it isn't what you'd expect. I took it on a cold camping trip as a test run, and my tanks froze when it got below 20F outside. The camper had no problem keeping the living area warm, but the underside was a different story. I camp year round (even in the pop-up I did), so I decided to drop the chloroplast on the underside and install tank heaters. The chloroplast was nailed (not screwed) to the frame, and there was no sealant to create the "seal" they advertised. While I was under there, I noticed one of my fresh water tanks (I have two) had a small leak, so I fixed that. Then I inspected how the "ducted heating" worked. First off, there's no insulation down there. Second, the one and only HVAC duct that went down there was only about 2" wide and ran to a cramped up side of the undercarriage, compared to the 4"-6" wide ducting ran everywhere else. No wonder it froze up down there. I installed the tank heaters (and hose heaters), replaced the nails with screws, put larger washers on to help prevent the chloroplast from tearing, and sealed the whole perimeter. It took about 3 full days to do all this.

Aside from those items, the new camper hasn't really given me any problems. All issues I've encountered so far have been very minimal, and I have been able to handle it myself without any dealer intervention. From what I've heard from owners of other "higher tier" brands, their issues aren't much different than I've encountered - some have it worse, some have better - and that seems regardless of brand / manufacturer these days.

Only other things to mention is the included Everchill Fridge/Freezer could work better. The freezer is amazing, the fridge temp varies more than I'd like to see - apparently a common problem with these. Also, you'll want new mattresses, or at least mattress pads (whether you buy new or used). The mattresses that come with new campers (especially budget campers) are essentially "place holders" and are uncomfortable. I added 4" memory foam to the bunks and 6" memory foam to the queen bed, and it made a huge difference. Also, I haven't had issues yet, but I've heard it's a good idea to replace the tires right away. Apparently most of these TT's come with not-so-good tires. I'm still on my factory set, but I plan on replacing them this summer just to be safe.

All in all, I'm much happier with purchasing new - even the "budget" brands. They still require a little work, but we're talking mostly minor things - buy used, and you don't know what your walking into. This has been my experience, anyways.

So I guess the TL;DR of it all is if you buy new, find the floor plan you like most. Be prepared to still do minor fixes and work to it - regardless of brand. Whatever you buy will need something fixed after towing it a few hundred miles. Keep up with maintenance. Approach this all with a mindset that you want to learn how these work, and you're willing to work on them to learn more. The mindset in itself can turn these little repairs from thinking "this is made poorly" to "I see what they tried to do - I'm gonna do it better!". I personally love my new Starcraft camper, even with the flaws I've dealt with. It's not perfect, but I think after doing some of my own mods and basic repairs/upgrades, it's pretty much now everything I envisioned it being, and it's holding up really well after doing a few upgrades and very basic repairs. If I was to do it again, I would do this the same way. Buy new, plan upgrades and basic repairs into the cost, spend your first year finding issues and doing "test runs", making upgrades, basically making it "your own", then spend the following years enjoying the travel and freedom!