Scalemates lists a kits history. That way you can determine if the kit you're interested is a newer mold and by whom. Like the 1/32 Hobby Craft P-40C is the same molding as the Trumpeter P-40B. Also, look for build reviews. Some kits are fantastical engineered and go together like a dream, other will fly against the wall from frustration.
Personally, I've built a few of the newer 1/72 kits and not encountered too many issues; Phantom II, Spitfires, P-40's, F-35 beginners kit, off the top of my head. The latest were the Lightnings, F2A and F6. Lovely kits, no notes