ive got a set of the Type X components on an alpine mrp-f240, just a little bottom of the line 4 channel, rated at 40x4 rms.
http://www.crutchfield.com/S-AIq5erdKCC0/cgi-bin/ProdView.asp?I=500MRPF240

im not going to tell you that this is THE BEST shit out there, but it sounds good for what i paid.

i am planning on going active, but as it stands, im running only on two channels and its loud enough to overwhelm my ed 13kv2 on 450 watts rms.
this is all subjective, but if you want a nice balanced system, something like this could be a good combination.