Just got back from my trip to Best Buy, and I like the sound of the Polk speakers the best for the money. From what I have read they appear to be quite durable as well.

Another question I have is what to look for in a head unit. I know I want front AUX and would like front USB and HD Radio, but I am not willing to pay a premium just to get them.

Should I really just look for the cheapest HU with the features I want from a reputable brand name and not really worry about the specifics?