Kole Audio Reviews!

My ideal system will be either two component system 6.5 MB quartz or Alpine type-R 6.5 (80-125rms)

one 4 ch amp for components and one for Subwoofers.

The MTX T404 is a great little amp for the money (220 MAP). It makes 50 wrms x 4 @ 4 ohms. MTX has really improved their production techniques in the last few years. I have sold both MTX and Rockford for years, and right now I would have to say MTX is building just as good, if not a little better,  an amp than Rockford is(*gasp*). At least for the money.

Also JL just released a grip of b-stock e4300 amps that sound killer for about that same price. Find a JL dealer in your area and see if you can score one of those. They have the same warranty as a-stock amps, they usually have cosmetic defects only.

Either of these would make your components sing. Other amps mentioned on this thread would work well, too. Check a couple out, see if you can hear them in action and get the one tht most appeals to you.

A ported box is more efficient, yes, but that only means it takes less power to get the same output as a comparable sealed box, and even then only around it's tuned frequency. By running the same amount of power to a vented box as you would a sealed, then, you would get a large increase in output for no more input than you would have given the sealed box. It's like free bass! (except that you paid for it, just got a good deal *lol*)

I say port those Kickers and nail them with as much power as you can afford. As long as you filter the bass below the tuned frequency of the box, they will handle all the rms power a sealed box will.

last thing, I promise. If you like the sound of Quart, check out the JL Evolution. I sell both and I have to say the JL sounds better for the money. Look at the VR series. Similar money to the Quart Reference and Alpine Type R, but much smoother response. Listen to them all, see what you like. That's just my suggestion.