I am trying to decide between 2 Audiobahn Immortal 15's, 2 RE MT 15's, and 2 Atomic Apocolypse APX 15's.

I have been leaning more toward the Audiobahn's b/c they are more in my price range at the moment.
Whichever speakers I go with will be paired with 2 MA HK40000D amps.
I want to get at least mid 150's

in a 96 Nissan extended cab pickup.
Do you have any pointers on what type to power supplies I will need?
Also, do you know of any web-sites that have less expensive prices on new RE's and Atomics?
Any suggestions on how to get that mid 150's range are welcome also.