Questions about R0 from a prospective buyer

[GumbyX84]

I've been looking for a new MP3 player for awhile now and recently stumbled upon the R0. Having never heard of it before, I did some research and found it to be a really nice player. I can't find many reviews of it, so I thought I'd come here and see if anyone who owns the player can answer a few questions for me. How does the SQ of the R0 compare to something like the Sansa Fuze? I had a Fuze and the SQ was great and would like something of the same quality. Also, I'm seeing a lot of posts about FW issues ranging from the UI to libraries not updating. Are these "normal" issues for the R0 or have FW updates fixed some of these problems?