Hey guys, I'm just getting back into car audio after a long break. I am using an old orion xtr 500.4 for my components. The amp is rated at 125x4@2ohm and 50x4@4ohm. I've read some good reviews of the Polk mm6501s but would like some other suggestions. I'm heading to a local stereo shop tomorrow to listen to a few different brands, but the guy I spoke to made it sound like most components are 4ohm only. My current budget is 200-300.