Well... If you accept the fact that it is unmoddable (it selfdestruct if you try)
and you're left on Motorola mercy forever with no path for community upgrade (much alike with Nokia's NITs) - it's a great device.

I was really waiting for new Milestone XT720 release - it looks like a dream platform to port Maemo/Meego to. But I more than sure, that it is "protected" with selfdestruct hardware too.
And to my knowledge only Nokia and Motorola make OMAP based devices. So, we're really left with whatever crap Nokia has to offer us in the future At least it is basically open crap.