Op 22, its wikid. The only thing is that the slow movement isn't great imo and that detracts from the rest. Its also really fun to play.
No. 8 (Pathetique)No. 14 (Moonlight)No. 17 (Tempest)No. 21 (Waldstein)No. 23 (Appassionata)No. 26 (Les Adieux)No. 29 (Hammerklavier)No. 32 (Op. 111)
Somewhere there is a poll that asks you to vote for your 3 favorite Beethoven Sonatas, don't remember where it is.....
Good choice brew, WIKID is right, it's farking hard! But the slow movement is beautiful! He hardly ever writes a melody like that, but when he does...