Personally I would go for Beethoven 1 because I find of the three concerti you decided on that proves the best point for a competition.
Really? I would say Beethoven 3 is the most likely to win a competition, so from a purely pragmatic perspective I would choose that.
for me there's no way beethoven 3 is harder than 1 but that's just my opinion.
( did'nt want no.4 but it was in the cd anyway)
Yeah it was there anyways, I didn't really cared, it's just the best of the five anyways ...On a more serious note, I'd play Beethoven 3. You are playing all 3 movements right?