My XM Radio was installed today by North Park Lexus of San Antonio. Cost was 424.35 parts 293.76 labor 32.89 tax for 751.00 total. After I called to activate, it took about 20 min to "take". Sounds great and works just as I had assumed -- all text about the station and song display on the NAV screen. There is a soft button to advance types of stations, and three screens of 6 buttons each to set favorites. Toggle from AM to SAT1, SAT2, SAT3 button screen with the AM/SAT hard button on the right of the screen. The antenna is black and about 2.5in square on the trunk lid -- not very attractive on a white car! I called XM tech support to ask if the ant can be painted to match the vehicle. They said "YES" just paint it with normal auto paint. I'm going to investigate a little more before I commit to painting it.
Overall, I'm very pleased with the performance of the XM kit.
Ken