Hi Doug, I am using Mac OSX 10.8.2 and C1 V6 but would like to upgrade to V7. I would be processing Canon 1Ds mk3 and Canon 5D mk3 files, and hoping to tether with one of those cameras but have no preference. Are these all compatible and 'playing well together' ? I am more interested in stable processing than tethering. I am on a 12 core mac tower with 32 gb ram.
7.0 is not fully stable on all systems. On some systems it's been showing itself to be quite solid; on other systems its quite crash-prone.
7.0.1 should be out in the near future bringing bug fixes across the board.
If you're not worried about tethering than processing Canon files is no more/less stable than processing other kinds of mid-sized raws.
The raw processing quality is pretty stunning; I think you'll be very impressed.