To follow up with Jeff Townes' review of the Mk3, I'm rather shocked at the monitoring issue he reports (single mic tracking to one track = mono monitor output to one channel only). It's surprising given the monitoring flexibility on the Dr60, 70, 701, etc. And we haven't even started with M/S monitoring (although according to the manual, the relevant options are available).
I thing I'll stick to my D100 (and save up for a USBPre2).
(Btw, this was my first post on TS - Hi, everybody.)