I've migrated to mac, and love using unix with a great GUI. Those mac minis are sufficient to run IB and prorealtime. Add one of those Apple DVI LCDs and you've got a great little system. Oh yeah, and no fans! If you want to save some dough there are plenty of 19" DVI LCDs in the $300 range... $800 for a mac mini and 19" LCD.
Proud owner of a G5 20" iMac and powermac quad + 30"
Proud owner of a G5 20" iMac and powermac quad + 30"

