Can someone tell me if the doors still rattle on the '11 if you add a sub instead of using the door speakers for bass? I didn't have any issues with my '04 and the under seat sub, but the '11 door panels seem harder and they definitely rattle with the stock stereo once you turn the bass levels up to where you can actually hear some bass. I'm just wondering if I'll need Dynamat in the doors too or if I'll just need it in the trunk to quiet the catback at freeway speeds a bit (and any potential trunk rattle if I go with a trunk sub).
I have an Alpine 10" and 300 watt amp sitting the garage I could use, but I don't want major rattle problems (I don't really need thunk/rattle bass; I was happy with the output of the '04 seat sub, but the Alpine did sound good when I had it in my old '93 ProbeGT). I'm thinking the seat sub would save me trunk space and probably avoid as much potential for new rattles. If I did use the Alpine, I'd probably move it to an Audio Integrations box to keep a nice "OEM" look (photos I've seen look better than Subaru's trunk sub and this would do a lot better).
As for a HU, I'm currently looking at the Sony 660BT kit with BT and Backup Camera (it has integrated Tom-Tom NAVI). I've seen very few comments on this unit (or the related 770BT; I prefer the real volume knob on the 660) as a whole when searching and I don't know if the BT controls on the steering wheel will work with it or not. I assume I'll have to run a new USB cable to the center console since I still don't see any adapters available for it (although some have apparently figured out how to wire their own).