I bought a Micro BR a year and a half ago, used it to record the audio for my last Youtube video. It works ok for what it does, but there were a couple things that frustrated me:
1. It doesn't come with an AC adapter (gotta buy it separately) and the battery life isn't that great
2. The small compact size means that you have to run through a bunch of menus to adjust the settings; it works, but I'd rather have something with separate knobs for volume/pan/etc. (I knew this would be an issue before I bought it, but I figured I'd learn to deal with it and sacrifice a little bit of usability in favor of portability)
Again, it works for what it needs to do and the audio quality is pretty good, but I rarely ever use mine...whenever I want to do multi-track now days I just use my Zoom H2 and my laptop...YMMV