Exactly what I do. Two Schoeps mics to USBpre2 with external battery to Sony D50. Sound is great. Only problem is I am tried of the cables between the battery and USBpre2 and the D50. I use velcro so the three units - battery unit, usbpre2 and D50 stay together - but still I would rather have one portable unit with the external mics - like a SD 702 or better.
[/quote]
If my recordings were that critical, I'd pair the D50 (or the D100) with my SD USBPre2, a USB battery and 2 high-quality external mics. That would give me excellent stereo representation. The M10 doesn't have a digital input and can't sit in this chain.
[/quote]