I am the market to buy a new GPS. After going to MT last year I want to get one and get the chip that shows the landownership. I currently have the Garmin Etrek and need to upgrade. Right now I am leaning towards to the Garmin Oregon or Montana. anyone have any of these and what do you think? I see there is an oregon 550 and 600 and 650. Cabelas has a sale on the 550 that is over 50% off. Or should I go with the newer model so it is not outdated sooner. The Montana is more expensive but I am not sure what the major difference is.

Any suggestions is appreciated. Even if you have a suggestion on a different brand. Thanks!