Apologies for the delay all.
On our last record we only used 8 via MAudio's Octane 8 pre. As i shamefully bow my head and admit that we were using Protools Mpowered on an xp pro box to track everything, haha, the octane => fw 1814 via lightpipe got the job done.
We've just outgrown our current studio and rigs. Everything has been upgraded, and we're currently designing a live drum room, so we're gonna need some more i/o to get the room sound dialed in, along with a few additional strategic mics.
As for the specifics on our setup, it's realtively simple. SM57 (in isobox w/ cab) => fw1814 => logic pro via 800/400 cable. We're tracking at 44.1, and we haven't altered the i/o buffers at all, so they're at the default. We've been on such a roll writing-wise, and we both spend about 8 hours a day staring at monitors so we tend to get loud rather than troubleshoot, haha. It's completely random, and pretty darn near impossbile to perform a solo when you lose the backing tracks!!
A high percentage of everything that I read suggest the drivers are the issue. I haven't upped to Lion yet, as Snow Leopard has been really REALLY stable.
I truly appreciate and am diggin the feedback on the MOTUs though. I'll def check them out. Can't wait for those Apogee thunderbolt interfaces!! $$$$$$ lol