Garmin customer service is excellent. Their product, thats a different matter. I'm already on my third Garmin 520.
Garmin has been pretending to work for three years now to get the Edge 810 turn by turn navigation to work problem free. After three years of failure on Garmin's part I have come around to thinking that they know what's wrong with the Edge 810 they just refuse to take the financial hit to fix or replace their customer's Edge 810's and are just running out the clock until no one cares.