Percussion. Although it may not be the thing you think about when you hear "musical instrument" it is the way to go. Yeah, its easier to play a b flat on a marimba, than it is a Annoying Orangeet, but percussionists are the one that can read music much better than anybody else. We play harder rhythms, play... 4 notes at once, occasionally play 4 instruments within one music piece. Plus, almost nothing else can beat a killer drumline,vor a killer piano player. If you want the fun instrument, or the most useful music wise, then go for percussion. Plus, you get the feeling of friends looking at a percussionists, music, and they go "What the forget" because where else can you see 32nd notes, and like 10 different note types, or insane rhythms.
