what is a good amp for these 3 subs?

well with those three subwoofers, this amp would work nicely

http://www.sonicelectronix.com/item_17597_Hifonics...

and you need to wire it like this

http://www.the12volt.com/caraudio/woofer_configura...

to get a final result of 1.34 ohms. You'll be getting close to 1200 watts altogether which is about 400 watts per woofer. I say about because you won't be running at 1 ohm. you'll be above it.

But you won't find another GOOD 1200 watt amp for 200 bucks.

You don't have to have an amp with the maximum RMS. All of the subs you listed will work OK with less power. The amp is well within their RMS power range. From among those choices, the P3 is probably your best choice. It'll definitely sound the best! And it will work in an enclosure 50% smaller than the 10" Kenwood. I would only recommend the 8" sub if you don't have enough room for a 10".

Any Lanzar - Rockford or Kicker amp with about 600W would be nice. But honestly id stay AWAY from Sony subs, ive had some of there subs and never liked there sound. Now with Kicker u cannot go wrong, ive had Competiton & Solobaric and still wish i never sold my Solo, but with more break ins happening were i lived i wasent gonna chance it.

thats 1060 watts rms your gonna need a good amp dawg. ima tell you this you get what you pay for i have 2 10"s and they are underpowered by 100 watts and they still slap cuz JL Audio is pushing them. JL Audio is a hell of a brand but is really expensive. what im saying is i recommend you get some thing clean like JL and have it last you for a really long time(mine is discontinued and still pushing hard) than some thing affordable and break down in a year or less. Check it out