Hifonics seems to be a popular choice. Hey your in seattle. what kind of equipment do you see on that side of the water? everyone over here is either dual, low-end JL, or kicker heh.
But anyways, if you set your gains right a hifonics bxi1606 would be nice, even a 1206 if your on a budget. Umm what else, might want to try to get your hands on one of those viper1200.1's. i don thave personal experience, but i've heard many good things about them