edmarin,
It's a crap shoot spending the $$ on the update and what you're getting for updates! I belong to another board for my truck and some of the guys got an off the shelf GPS for the 200 bucks and get lifetime map updates included in the purchase price. I guess you have to weigh if you want another device hanging off your dash. Before the truck I had the GPS hanging off the dash. More like a neon sign saying look take me! I've never had it happen. The wife has, so has my co-worker. If you order the disks before the end of June they are discounting the purchase price by 50 bucks. My wife find the indash units very cumbersome to work. Also the off the shelf units can transfer to another vehicle easly, such as a RAC or in my case one of the other's in the fleet.