I have had a 2730 for 6 months. I was always having problems with "Lost satellite reception." On a 100 mile trip it would lose reception about 5 times. Very frustrating when you are in heavy traffic near your destination and the unit all of a sudden doesn't know where it is.I solved the problem by accident. I was programming the unit at the beginning of a trip. It was getting full reception. When I turned the car on, the reception went away. Turns out that my XM radio on a separate power outlet was causing interference. Turn the radio off and reception bars go up. Turn it on and they go down.Anyway, just a little helpful information for those of you ready to throw the unit out the window.