Are you planning to go with a 4 channel in the future? Are you changing out your head unit? Alot of factory head units do not provide enough power to drive a lot of after market speakers. Therefore causing distortion then in turn blowing spkrs. But to answer your question, If you are using your factory head unit or even after market (not using a 4 channel amp), the infinity's referance series (sold at Best Buy) do not have a crazy RMS rating so they sound really good. Adding an amp later would sound even better. But personally speaking, I really like the JL Audio's, Infinity's (Kappa Series), Alpines... The only thing is needing a 4 channel amp for minimum/maximum performance of the speakers without causing problems.