I go with Matilde Tracker 3 (1.10 rc1):
http://buzzmachines.com/machineinfo.php?id=1057
For my songs, I use a track or two for each drum, which I multi-out through MT Nada's then group together again into MixIO for levels, panning, etc. (since I don't think buzz allows multiple outs/ins between only two machines, though I'd love to be corrected).
For bonus points, feed each drum out through a sgorpi multitrack writer so you can record individual drums tracks for use in external DAWs.
Alternatively you can try Drummix Beta (free) vst, or upgrade to one of the pro versions. It could be less fiddly then using a sample tracker, albeit with a bit less control:
http://www.bluenoiseplugins.com/plugins ... a-edition/