i was thinking of going all planet on this system but everytime i hear a type r im impressed. i think im still going to go with 2 15"s just have to pick a sub. http://www.onlinecarstereo.com/CarAudio/p_14956_Alpine_SWR-1542D.aspx type R http://www.onlinecarstereo.com/CarAudio/p_20642_Planet_Audio_BB15D.aspx big bang what do you think?