I used both dynamic and condenser omni's on drum's and i liked both
2 complete diff. sound. on paper the condenser are supirior but the dynamic omnis (beyer m101) sounds great to, could be nice with overly bright cymbals
the cool thing about omnis on drums is that you can put it pretty close and stil having a 'spacious' sound, without the boomy-nes you get with close miking.