I am on my second 3490LMT now. Both have had very bad traffic reception. I have updated the software and tried the traffic table reset to no avail. It is very slow to acquire signal even in a supposed strong signal area, and very quick to lose it. I upgraded to the 3490 from a nuvi 750 with msn direct. I never had any reception issues with it, but the service is going away at the end of the year. I expected at least the same performance from the top of the line product with "3D traffic" that I paid a premium for. But so far I have been nothing but disappointed. By the time it is able to detect any traffic I am already in it, and it is too late to avoid it.