It's a good question Michael and one that has been raised in the past. We all know that if you want a really good WW1 aircraft model Wingnuts are the way to go, good quality, excellent fit and builder friendly, there is no question about it. But there are many other 1:32 scale WW1 aircraft kits available, Roden, Special Hobby, Hobby Craft, Academy, Battle Axe, Omega, Alley Cat, HPH and Aviattic just to name a few. I have built kits from all the mentioned manufacturers and even though some were very bad, I never gave up on a kit. My worst experience were the Omega kits, extremely poor quality, fit issues and pathetic instructions. Second to Omega was the Battle Axe Fokker E.III, not quite as bad but close. I have built all of Roden's 1:32 scale WW1 aircraft kits and found them to be quite respectable, they do require some extra TLC but build up to be nice models, the decals leave a lot to be desired though.
I think it all boils down to the individual modeler, if you want a "shake n bake" kit go for a Wingnuts, everything else needs a little time and effort. I built the Alley Cat Bristol M.1c when it was released, brilliant, I have the HPH Macchi M.5 in my stash and appears to be brilliant as well, and the soon to be released Ansaldo by Aviattic should be up there with Wingnuts. Sorry to ramble on but these are my thoughts, in my opinion all kits are worth tackling.
Des.