I would try an MR2 for about $250.
I can't see buying one for any more than that, and I don't think anyone really will.
With an M10 being less than that and all....
I still want to figure out how to replace the battery in the MR1... If we could just buy 2 more internal batteries for the thing, and replace them ourselves, none of us would even be looking at the MR2.
I actually like the 20 gig hard drive more than the Flash slot option, but I don't do any festivals so I would rarely need more than 8-12 gigs before I could go home and dump the files... now if it had both, AND ran on batteries, AND the noise floor of the MR-1, I might think of it as worthy of, say $400.