I'm runnin' the PA2-1600W Power Series amp, with 2 10" FUBAR 1600W, and the 5 farad Capacitor. I haven't had any problems with it and it hits HARD! Everybody has their own opinions on brand names. Quality-wise PA isn't the best, but the cost/benefit ratio is definitely up there! I'd throw in a cap in your bro's system...that'll keep his headlights from dimmin' every time the bass hits. Probably don't NEED a 5F, but it would definitely be better. You'd have to let someone else help you with that. I got mine just to cover my bases if I ended up wanting more subs or speakers, but I got both my subs, rear speakers, + 2 more 6x9's running off my amp and it hasn't cut off yet.
I say it sounds like it'll be okay, but if he's cranking up the bass all the time, you may want a bigger amp, seeing as that subs crankin' out 1500W RMS alone w/2600W max and add a cap. Just my $0.02!
