Guillemot make good "all rounder" cards, but the Midiman will sound nicer.
Having said that, 200-300 buys you a bloody good audio card, whatever you get. I'm currently running an Audiowerk 2 (audio sounds good but 2 input channels limiting) and a Soundblaster (for midi) in 1 machine, and that seems to work pretty well.
getamac. sorry, did I say that?