This has been working well so far for practices (haven't gigged with it yet).  The sound seems good compared to the SM58 I was using, but it seems quieter (before feedback anyway).  The head gear stays put and the ear part is comfy.  It's a little bit tight around my head but my head is larger than average.  I haven't stretched it out too much because I didn't want it to get too loose on me, but so far, it's been holding its shape (and still a bit tight on me).