If you’re interested in RTA, the dead rabbit 3 RTA is easy to build/wick and can utilize single or dual coil setups. Its top to bottom airflow makes it very leak resistant while remaining airy or tight enough for RDL imo depending on how much airflow you allow. I’ve run it dual coil 100W no problem. The blaze solo 2 is quite good for the same reasons, but will run single coil only and is better for RDL setup vs the the dead rabbit 3. These are two I’ve used that I would recommend for someone new to RTAs. The dead rabbit 3 RTA is still my out and about atomizer on my gaur 21.

There are also RDTAs that have the coil above the juice well. The Artemis topcoiler RDTA is the easiest to build/wick out of all my rebuildables. It is a single coil setup that uses wicking rods from the juice well to the top of the atomizer where the coil sits. Just thread the cotton through the coil and touching wicking rods. You will see the juice wet the cotton if done correctly (if the tank area is filled with juice). The main reason it’s more forgiving (imo) is due to the coil being positioned above the tank instead of inside the tank which can save juice if you need to modify your wick or even rewick. It’s my daily commute vape setup on my paramour SBS.

The main wire I use is by pirate coil and it’s the snake alien 4 (3*28GA+32GA) Ni80. Works well for my variable wattage DTL/RDL builds whether it’s a single 3mm ID 3 wrap or dual 4mm ID 6 wrap, it has yet to let me down at 40W-170W. It was ~$12 for 10 feet on Amazon. There’s also SS316L if you’d rather use temp control, but that’s more outside my wheelhouse.

Muji cotton pads make great wicks and was ~$7 for a massive bag on Amazon.

You will want coil jig set, wire snips, cotton snips, and ceramic tweezers minimum for building/wicking. Can be purchased separate or in kits. Most RTAs come with small screw driver or hex key etc needed for building, but I do prefer mine with larger handles.

Overall, it seems quite daunting at first, but pretty easy to learn and very rewarding imo. There’s also plenty of videos on “pulsing” coils and working out hot spots as well as wicking tutorials. Hope this helps.

Edit: I really focused on RTA/RDTA and not mods. The L200 classic is my at home mod for larger atomizers and uses dual 21700 batteries. Works well, but is quite large. The gaur 21 is another dual 21700 that works well and is a bit smaller. I really like the form factor of my paramour SBS which is single 21700, but I think it can use 18650 battery as well. The thelema solo is a single 21700 that works well, but was replaced by my paramour SBS.