I recently bought a 2006 GX470 with navigation and the Mark Levinson sound system and I want to install XM Radio somehow. As far as I can tell, only model years 2007 and newer have a factory-available XM system. I was going to have a separate XM tuner installed and then I just ran across the Vaistech website and it looks more convenient than a separate XM tuner and not that expensive. Does anyone have any experience with it? Is it easy to install or would I have to have it professionally done? I appreciate any thoughts on this.

Also, as an unrelated matter, I have an iPhone and the phone book doesn't seem to sync with the vehicle's Bluetooth system. Does the Vais help with this at all?