Alpine or Infinity?!?!?

I would def go with the infinity... I would say if you were going with some very high end components, to maybe go with the alpine, or maybe even some kickers... But for your situation, the infinitys will work great and are probable cheaper... If you were going to amp them I would go with the kappas, but if not, no worries. I have a set of infinity kappa perfect components and they are some of the best I have ever heard...