I got mine too. Not as happy as I'd hoped I would be.
#1 It didn't come with the MapSource software, which is half the fun wile planning trips. We have some nice but complicated routes in the Hill Country down here, and I wanted to be able to set my Nav Points in advance, etc.
#2 The FM Transmitter has a lot of static because there are very few channels that aren't picking up a little something, so transmitting to a channel that will be open in differnet areas is almost impossible. It will require you to change to a new channel on the radio and the GPS. It is not a huge issue because the I can use the aux input, but in the car, it doesn't work which means the XM is as useful.
#3 The XM doesn't work to well indoors of course, so I can really use the GPS as my XM radio for this reason and #2.
#4 Of the 4 or 5 pre-loaded destinations I have navigated to, 3 of them have been wrong, and one of them had me get off the highway, just to through the light to the next on ramp back to the highway.
#5 Map updataes are about $50, and I you cannot tell if it has any updates that will be beneficial.
#6 The XM Traffic/Weather is not available in my area.
Don't get me wrong, I like the unit, it's just that those things were just sort of a bummer. I think I'll enjoy it more when the MapSource Software comes in and I can program my destinations myself rather than relying on the preloaded ones.