Unfortunately, the two places i want to be are long island and south florida. I would say I've done extensive research and florida has been a very tight market for few years now- basically sheridan has bulk and private practices are not offering/or very shady with partnership. Sheridan is very upfront,tell you it is what it is, everyone the same more or less.
That being said, I'm currently working for Napa, which is quickly dominating long island nd unlike sheridan doesn't buy out practices, just takes control with contract. But apples to apples, Napa offers better benefits and different hospitals have different deals, where Sheridan everyone gets x, plus I've heard (but second hand, can't confirm) Sheridan recently is making employees contribute larger portion of health insurance cost.
Unfortunately, as someone who has family both places but loves Florida, the reality is Florida suffers from majority medicare (old pop) and in younger areas like south florida no insurance/ or medicaid in masses. In fact many non sheridan groups still existing are holding on by receiving subsidies from hospital- if that goes, forget it. I was told the model of doing your own cases in florida would put you on a staple diet of raman noodles, thats why you need to cover 3-4 rooms to survive. I had to cover 4 rooms/doc my old job, including heart/major vascular/neuro. And took tail hit to leave, at least sheridan covers that; but no retirement other than available self funded 401k.
Just my experience, since I've lived/worked in both areas that are subject to two of largest management firms.