Flip a coin......

I've seen 3 ARFs that were the same airplane, bought at different times marketed by one "mfg". By "same", I mean like the 46size CAP by one mfg. All were bought in the same year. Box art the same. Building instructions the same.

One of 'em had a deadly weak stab. It blew on the first flight. Contest weight balsa that wasn't contest quality and was where only an inexperienced builder would have put balsa that size, much less weak balsa.

One of 'em didn't had more lightening holes in the fuse than the other two.

One of 'em only had about half the doublers glued. Actually, it was half the places that should have been glued were glued.

Heck, when ARFs differ so much from ONE MFG, why worry about comparing different mfgs. FWIW, those 3 "identical" airplanes by the one mfg....... I also saw the same kit in a difference box that was as identical to those 3 as they were to each other. It was supposedly by a different mfg, right.

BTW, I'd suggest you narrow the topic down to the airplane you're interested in. Then, people might be able to give some worthwhile info.