I just upgraded the door speakers to the Infinity Reference REF-6532EX 6-1/2" 2-way Speakers at $74.95 a pair. I run music through my phone for XM, Pandora and Itunes. The factory speakers were missing a lot of mid range almost muted, I actually thought I was losing some of my hearing. With the new Infinity's replacing the door speakers front and back, there is great mid range and some additional thump on the bass side. Easy swap out and I recommend it highly especially if you like clean, crisp volume.