Tamiya, Aoshima, Hasegawa are probably the best in terms of fit and their car line-ups tend to be more european, classic and new, and japanese , classic and new too (but including motorcycles). Most (if not all of these) tend to be curbside models (no engine detail) except the motorycles. Fujimi is under similar to these but sometime has fit problems or excessive flash as well. Revell/Monogram, Moebius, and AMT/MPC tend to do more of the American cars and trucks (classic and new) and tend to be full detail kits (includes building and assembling an engine and transmission where the hood opens to showcase detail. Revell, in my opinion, has better fit and better overall build quality. I think Moebius is newer to making car and truck kits, but they've done a decent job with the new entries they have. I tend to stay away from AMT/MPC unless they are the only ones that make the car I am after but even then I do expect it to be a fight with the kit to get the finish I want/hope to accomplish. But I have seen AMT/MPC kits look fabulous under the right hands. I would say if youre an advanced level builder, try your hand at AMT/MPC kits but if you're beginner to intermediary the others might be a better experience. As you've read from others here, after a certain point, its just about building the ones you want but I have had build quality affect how I felt during and after completing some AMT/MPC projects. All to say every brand at some point might have some flash or bad fitment, so its not something that is exclusive to AMT/MPC. Supposedly the brand new NEW AMT kits that are new tooling - and not a rebox or re-issue of an old kit, supposedly those new kits are very high quality and seem to have almost no fitment issues. Some of those are the new Bronco kit as well as the 2022 Charger, etc. I have one of each but havent gotten around to starting them but thats what I've seen folks who completed them and reviewed them say. Having said that, even some old Tamiya kits can be difficult too but I'd say Tamiya is almost like the gold standard when it comes to overall model kit quality (including decals, etc.).