I checked out Renzo Gracie's school and Alliance and am trying to decide between the two.
Renzo's: Nice space. Had a locker room with showers. Bunch of Brazilian chicks hanging out. Frat type atmosphere with 6-7 blackbelts hanging around.
I was given a 30 minute session with one of the blackbelts covering some basics. The instruction was very good. Then I stayed and watched the whitebelt class of about 20-25 students. The class was 1 hour, and I was disappointed they didn't let me participate.
There were 2 blackbelts leading the class. Again, the instruction was very good. They did warmups, showed about 4 techniques and had the class drill them. There was no free rolling.
Cost: about $189/mo. unlimited + registration. Automatic deduction from your credit card or bank account, and you are committed for 1 year. Here's the kicker: you must attend 3 classes a week or will be kicked out permanently.
Alliance: Small shitty space atop a bar. No locker room. 1 shower that I doubt works.
The head instructor was teaching and I didn't get to see Marcelo Garcia. The instructor's english was so-so, and he didn't have the great step by step instructions like at Renzo's.
The class was 1.5 hours and there were about 13 students (3 blues, 1 purple, the rest whitebelts). I was allowed to participate. The warmups were longer and more intense than at Renzo's. The instructor showed 1 technique (an escape) that we drilled with resistance. The last half of the class was free rolling from knees (45 minutes).
Cost: Same as Renzo's for unlimited, but no commitment.
I did the live resistance drills with 3 whitebelts who had 3-4 stripes. Although I have no formal experience with grappling, I've read almost 10 BJJ books, watched PRIDE/UFC, watched BJJ instructionals on Youtube, and read discussions on this grappling forum. Plus I rassle with my GF, who was a former athlete.

I think I did pretty well since I could see their sub attempts and fight them off, and even put one into halfguard and was about to pass to mount when time was called. (Now that I've seen the Functional Halfguard vid (thanks Aesopian!), I realize sliding my knee across his bottom arm to pass to mount is pretty shitty and sets me up for the foot grab sweep).
I was allowed to free roll with the purple for a few minutes. He was a little guy who I thought was rolling close to 100% even though the instructor told to take it easy on the newbie. I was being mostly defensive and he swept me from butterfly into his guard. He tried to armbar me twice and a triangle, but I saw it coming and was able to defend. The entire time in his guard, the mantra "both arms in or both arms out" was in my head.
He eventually swept me to my guard and the fucker pulled the can opener on me! WTF? Is this a dick move to neck crank a newbie? I opened up my guard because I read on this forum that was the way to relieve pressure, LOL! Eventually, I went to all fours to stop his pass and he took my back. I turtled tight and rolled forward but he held on and tried to RNC me. I controlled his choking wrist with one hand (I guess he didn't watch Stephan Kesting's RNC video on how to avoid that, LOL), and kept his hook out with the other hand. Eventually, he gave up which was good because I was gassed by then and couldn't resist him getting to a deep north south stalemate, and I tapped because I was too gassed to get his crotch out my face. Tap out due to crotch!
It was really cool that I could see the sub attempts coming just from studying shit from books and the internet. However, I did not see the sweeps. It's probably because it's not what I've focused on. The whole feel of gi rolling was not what I expected. Because of the gi it was slower, more technical, and a bit suffocating, and not as smooth and explosive

as when I rassle no-gi with the GF. I was also not used to fighting their gi grips or knowing how to use them, although I did grab my own gi to defend a kimura attempt.
Anyway, which school should I choose?
One has better, more, and structured instruction, but a fucked up 1 year/3x a week commitment. The other has more free rolling and Marcelo Garcia, but only 1 technique taught per class. For some reason, I'm leaning towards Alliance.