I went from the 08 bone stock to 10 with much more including the premium sound from Boston. I am not sure about you guys but I love listening to my Pearl Jam loud when cruising alone in the XK :P

I remember with my 08 the system was pretty bad the louder the music became, and with Boston it is 100x times smoother and clear.

I think this is a pretty damn good sound system. My fiancee has a Bose HD system in her 2012 Camry and I can tell a small improvement especially when listening to talk shows.