Head Unit: McIntosh MX406
Amps: Precision Power (the good stuff, not their junk line)
Speakers: MB Quart
Subs: JL Audio
I'm out of it now, but I spent a VERY long time in the world of car audio. These brands impressed me most along the way. Mcintosh--not cheap, but worth it. PPI--best bang for buck and very clean when installed correctly. MB Quart and JL Audio--very little comes close, and nothing comes close for less.
If it were me, I wouldn't touch Alpine with a ten foot pole...too etched and brittle, not to mention unreliable. That said, I can't stand the Alpine sound anyway. Some people like it, I'm just not one of them.
Please follow Richingoth's advice to stay away from the Bazooka sub. IMO, Bazooka is the Bose of car audio. If you don't go with JL Audio, the Infinity Kappa Basslink is a much better sub than "Buzzooka".
As always, it's your ears and wallet that count. Do what they tell you to and enjoy what you get. Don't forget to have fun with it. Hope that helps a little.