I finally did it. I am actually sitting in Circuit City right now as they are installing my unit. I went with the Audiovox XCS9 unit. It should fit fairly clean using the "empty cupholder" space to the left of the head unit. I went over it very specifically with the 2 install guys. They said they've done these cars before (I hope). The wires should be hidden from behind and I'll still be able to use my cig lighter to charge my phone if needed.
I like this unit because it's got a blue display and its XM. I'll snap some pics this weekend and post them if anyone's interested. I also went with a roof mount in the front center. Should look good and plus the antenna is fairly small.