Have you bought the 13W7s yet? If not, i'd recommend something like the Brahma, XXX, Shocker Audio, Stroker, etc, purely for the price. If you are loaded and price is not an option, then go for the W7's. Just dont be bought into what your local shop tells you - look around and reseach different products and decide what you want before making a decision. Two Brahmas or XXX's powered by something like an Orion XTRpro 2400 or Crossfire VR2000D would POUND and be much cheaper than the W7s. Plus you could go up to the shop who tried to sell you the W7s and show them up, which although immature, is very fun
As far as interior speakers, JL Audio make very very nice speakers and sound great when they are amped, but theyre a bit pricey in my opinion. What kind of power from an amp are you looking for to push them? Do you want a 4 channel and a 2 channel, or three 2 channel amps?
"The world is full of people who want nothing short of perfect,
but settle for less, blinded by their quest for purpose."