I made a thread a few days ago asking whether or not the Polk Audio MM651s fit in the doors. I guess nobody here has any experience with this so I'll ask a broader question. What are some great sounding speakers that you guys are using in your cars (without any modification)? My new Accent Blue has no headunit yet and the stock speakers are in there, so I'm looking to get off to a good start with an audio system. Carrying my portable iPod speakers to and from the car everyday is a pain and they're very quiet.