If you don't mind, I've only heard good things about the RS4, care to comment?
You have good taste in cars, any pics of the aston, they are beautiful, so is the CLS.
Looks like you went car crazy this year, all 07's and 08's.
Roof module is a great first mod, if you have problems with installation, etyu is the guru
Sorry, can't help you with bluetooth.
And welcome to the forum, hope you'll enjoy your stay