It's Optima, and I love them. I've had a blue top (34m deep cycle marine battery, 120 minute reserve) for something like 4 years or something. It's survived getting chucked out of the car in a crash and flew down a hill, getting drained all the time, starts on damn near no juice, and an 800w system with no capacitor. throughout that entire time. So yeah, get a blue or yellow top. Yellow is made for stereos, but blue works extremely well too and looks cooler. And I think the reserve is WWWAAAAAYYYY underrated.

Rule of thumb is 1 farad per 1,000 watts, but wait for B00gers' opinon, he knows more than I do. (and I don't know why he's asking one of those questions, and I can only assume on another of them, lol)