Hmm, for a hardcore band ( I am assuming you mean hardcore-metal, not hardcore punk) I would mix the drummers real drums with samples if possible, use Drum Kit From **** in the EZDrummer plug in, it's cheap, $150.00 and it works in Garageband, Ableton, Reason, Logic Pro-Tools, etc etc. For guitars, I use POD Farm that came with my Line 6 KB37, theres a literally ton of different amp models you can build. I also use Guitar Rig 3.1.0 by Native Instruments, it's pretty inexpensive too. For drum mics, use Shure Betas on the drums, if you can't afford Betas you can use PG series as well, but it will not sound nearly as good and you will need more sampling. Make sure the drummer plays with a CLICK TRACK, force the issue, it will make your life so much easier if he is sloppy.