After nearly a week with it I'm starting to get a feel for the M10. I've realised that the old minidiscs of yore HAD to provide superb onboard editing functionality because that was all you had. I miss easy track splitting and renaming, but as you can connect it to computer it's really no longer necessary. The focus is on collecting sound as quickly and efficiently as possible, something which the M10 does exceedingly well. Clumsy menus aside, when it comes to the crunch (recording NOW) the interface is intuitive and reliable. This device works so well in the field that, despite my nitpicking, I can't possibly send it back.
Oh, and soundforge is a dream.