Amp to Power 6.5's &6x9's

[SlamDUNKmyJUNK]

Hey guys,

I have recently purchased some Polk Speakers, and I am not a fan of running them off of the head unit, so I'm looking for a decent amp to power them with out breaking the bank to bad.

These are the speakers I have purchased..

6x9's at 4 Ohms...

http://www.amazon.com/Polk-Audio-9-Inch-Speakers-Silver/dp/tech-data/B000P0R6KW/ref=de_a_smtd

6.5's at ???

http://www.amazon.com/Polk-Audio-AA2651-6-5-Inch-Speaker/dp/tech-data/B001C3P6FI/ref=de_a_smtd

Im assuming the 6.5's will be will be 4 ohms as well?

These are extremely high efficiency speakers so I'm not exactly sure how much to give them. If you guys could throw out a few names of an amp that would be good for me, it would be much appreciated. Thanks