I'm sure I dont need to remind you all that its quality not quantity that counts - 10KW may be an awesome amount of power, but if it isn't channeled properly and distributed cleanly, then a good set up with 3 or 400 watts is gonna kick its A$$ all over the car-lot, that why you can but a 1000 watt amp for ?150 but a good quality amp with 4 x 50 watts could cost you double that - its all down to component and build quality
My Complete Kenwood setup sounds great, and I wouldnt trade it for all the power on the national grid if I had to run it through goodman speakers