Honestly, I work for Envision, but it wasn't as bad as I thought it would be. Our group is short, so we're always getting offered various generous stipends to take extra call, so as a young guy it feels like I'm able to make money like crazy, which I like. Perhaps this is due to our group being relatively large and having a history that long predates the Envision buy out making it difficult for them to institute whatever usual bull**** they try to pull.
It's still less desirable than a physician-owned group of course.
Sound is scary for the CRNA aspect.