I recently got a 06 stang and i'm about to upgrade the audio. I'm thinking about going with the focal ployglass coaxials and some diamond audio subs. Are these good brands? I mean as far as SQ and SQL go? I don't know what amps i'm going to use yet, but i'm just starting to piece this thing together. And are boston audio a good choice when going with coaxials? what about amps?