What are your opinion on these speakers? Ive been looking at the 165CA model but i also need 6x9s also. Theres a huge price jump into the K2 models and im wondering if there is much difference for the price? Whats the scoop on these,, and is there a comparable speaker i should look at that will pound and drive hard and stay sorted and punchy duplicating heavy metal. Im running a pioneer P4700MP HU and a 4 channel KX350 thru 4 infinity reference speakers right now and its just not cutting it.