it's more or less all the same stuff. What you learn from rickson isn't going to be radically different from what you learn from, say, ralph.
If you want to train "gjj" (which is explicitly not for sport, very old school and basic, and includes self defense) the only place i could recommend is either the gracie academy in torrance, or one of the valente brothers. They have "certified" a bunch of schools around the country but they're all crap as far as i'm concerned. You attend a seminar and get a certificate to teach? Gimme a break. The gracie university online training crap is even worse. Avoid anything that's even remotely affiliated with it.
Now, the gracie academy level of instruction is very high. Rorion's sons are all very skilled. But i don't know of any high level students they have produced. So the quality is there, but he's also in it for the money imo. But it's perfectly authentic.
I train at a renzo affiliate. My instructor is a first degree black belt under renzo. We don't train by sport rules (so if a technique is banned in competition, we still train it if it's effective), and we cover self defense tactics. But that's more of my instructor's own personal background mixed in. If you go to a school like gracie barra or alliance, you can expect to be training purely a sportive style. Again, that's not saying it's all that different from what you would learn elsewhere, and it still has more or less the same self defense applications (since sport competition is based on the same positional philosophy and submissions). Basically what i think you should do is shop around and find a place that has an atmosphere you like, a qualified instructor, and let them know your interests/goals before you sign up.