I don't know all of the game creators on Armor Games, so the only creator I really know is John and a few others. Most of John's games are great, so at the moment I would say him. :3
ConArtists. He puts so much time and effort into his games, good attention to detail. John has fun simple games, I like his style, but as for 'BEST', It is Con for sure.
Conartist has probably the BEST visuals in his games. You can really see the amount of deatil he puts into his work and is so amazingly satisfying to kill zombies with his games.
John produces great games that are new genres. Its a complete new experience and is a great breather from the other flash games that are out.
Krin makes some very well thought out games and of different generes. Mostly rpg and rts but alot of careful planning. Pretty good visuals but very nicely calculated to give a challenge.
out of the 3 i would say... Conartist b/c i think he puts most effort otherwise their all tied in the content they give out.
krin n con should team up tho to make a super game!