I really wanted the 450T, but ended up buying the much cheaper DeLorme PN-40 about 3 weeks ago. So far, I've downloaded 3 states on it, Wa, Or, and Montana, at 1:100,000 detail. I've also downloaded 1:24,000 detail of my elk hunting units, and have just loaded areal imagery for about 2000 sq miles, all fitting on the 16gb SD card I stuck in it on Friday. So far I'm impressed with it, only dislikes are screen size for viewing maps... Also I wish I could get the same map services of public/private land ownership overlays for the Delorme, it's easy to find them for the Garmins. I figure if I go back to Montana for deer again, I'll just buy a Garmin for that specifically, but for WA hunting, the Delorme will work great.