Well, I wont rep my gym since im probably too far for you =)
What are your goals with training?
Ronis' gym (Gracie Elite) is close to you. Ronis has held some pretty awesome training camps at his school and has some heavy hitters drop by his school. Before pans he had Gordo, Rilion, Kyra, Pe De Pano and a number of other great black belts training. It was pretty fun! When Roger is in town, he has stopped and taught a class or two. With all that said and done, Its still a new school and his students dont compete often. It has a very family geared atmosphere. It has somewhat of a toned town Gracie Barra feel to it. Not quite as Gracie Barra as Gracie Barra, but still along those lines. Ronis has another black belt heping him teach the classes at the moment. Hes really nice with a lot of knowledge, but his english is a little lacking. His students are very loyal to him and really good people.
Joseph teaches at Gracie Barra Garden Grove and I really like him a lot. He is a New Breed black belt and is really motivated to building the school. The school has had a lot of turnover with teachers and finding their direction, but it seems on the right path now. One of his friends recently started at my gym and he attended class with his friend just so he would feel more comfortable. That says something about his character. If you like the Gracie Barra system and like to feel as though you are an instructors first crop of students, this might be a good choice.
Demente teaches Jiu-Jitsu at Tito Ortiz's Punishment training center in huntington beach. He is a highly qualified teacher (obviously, given his accomplishments at major tournaments) and a super nice guy. Cant remember names if his life depended on it though. The Jiu-Jitsu classes here are as small as any gym ive been to. Classes could often be a private lesson with an amazing jiu jitsu practitioner. No gi is a lot of the focus here. The gym has a "MMA feel" with loud music going on at all times, so if thats your bag, this might be the gym. Also of note, (if you were asking for your kids), they have a very small kids program but with 2 VERY good (and tough)kids. They will be something one day.
Ace would be my choice if you were looking to compete in IBJJF tournaments. There is not really much to say there. Tim is top quality and has produced quality students. If he were young and healthy, wed probably all know him as a frequent medalist in the adult division at major tournaments instead of an author(as most people would recognize his name). For more of a competition focus for a young, single and starving student looking to win, this is the place.