Just go check ‘em out, man. Go to Google and do some research and go schedule a free class. Then, ask people who you know train what they think about the gyms. In the end, you may end up going to three or four and wading through some crap in each of them before you wind up at a decent place, but that’s all part of the journey, man.
To paraphrase Bruce Lee: Absorb what is useful, discard what is useless, and always remember to add what is essentially your own.