OK, so say you are choosing from 3 speaker sets...and say they all cost the exact same amount. Your configuration is you want 6.5" 2-way components up front, and 6x9 coaxials in the back. You already have a sub, if that matters.
Answer assuming you're running fairly low power (maybe even after-market HU power, like 18W RMS from an Alpine, although you will probably upgrade to something in the 45W RMS - 100W RMS in the future...so if your answer is different for those two scenarios, state them both.
The three speaker sets are: ARC Audio KS, Phoenix Gold RSD, and Infinity Kappa.
I've personally heard Kappas and thought they sounded good, but I've been told ARC Audios are great for the money, and everyone raves about the PG, but again, there's always that "for the money" qualifier. So, which would you rather have in this setup, if all three cost exactly the same?