for subs i would go with
http://www.ascendantaudio.com/Atlas%2015.htm or
http://www.ascendantaudio.com/Atlas%2012.htm and if you want to get crazy
http://www.ascendantaudio.com/Avalanche%2018.htm<--- 42 pounds
i say go alpine i have ben a fen for years i dont like their new amps but i have never had a problem with any of my head units.