I am looking at the Orion P-series comp set(6.5) for the front and a set of concept int'l 5.25 for the rear. My main concern is wiring the 6.5's correctly. They are an oddball 3 ohm. I haven't found my amp yet, so I could really go either way as 2ch or 4ch. I'm abusing my computer trying to find a good sq 2ohm stable 4ch amp,OR a 1 ohm stable stereo amp. these speakers are very well rated at 125wrms and 100wrms. I was hoping to find a comparable ppi amp, but mebbe I ain't looking in the right direction.