real drums sound like real drums... fake drums may stay in time and not mess up, but they won't be real and they won't sound real... if you're a decent drummer or can work with a decent drummer and you have a couple mics really try to do live ones whenever possible (heh and it'll probably take you less time to record decently tuned drums properly than learn how to operate a drum machine)... i have the 424mkIII myself and i've recorded drums with it a lot... you can get 4 mics into, and you can get even more if you buy a xlr - 1/4" converter so you can use channels 5 &6.. but seriously, 3-4 mics is good to start with drum micing.. if you want to use stereo drums, you'd stick the mics in, pan them creatively, and for tracks 1 & 2 (or other tracks, it really doesn't matter) pan left and right coorespondently, you'll have 2 tracks and the drums will be in stereo which leaves you 2 tracks to do vocals/instruments... if you setup the mics the same, don't pan, and just buss one track left (or right, whatever direction you panned all your mics) and record.. that'll give you mono drums, and 3 tracks left to do vocals and instruments...
to give you my setup, i record a 5 peice drum set, with a billion cymbals cause my drummer is convinced he needs them all, with 3 mics... sm57 on snare, sm57 on kick (hey, i like it!), and 1 or 2 overheads, and i do mono about half the time.. let's say i'm doing stereo... then i record the 2 guitars on tracks 3 and 4, mix everything together, do an external bounce back to 2 tracks on my 4 track, then record bass and vocals... works fine for me, try it out or don't, can't claim i'm professional, but i can claim i'm happy with the sound