I've owned and used GPS III, III+, V, Etrex Vista, 2610, 2820, 376c, 478 & the MIO C310x. My current GPS's I use are the 2820 and 478. My wife uses the 376C. I never could get used to the Etrex even though I think it would make a great DS GPS. The 367C/478 are my favorite GPS to date! Between the integrated XM & Nexrad weather, awesome tracking capabilities and one of the best GPS screens, they do everything I need. I like the 2820 for its ease of navigation and BT capabilities and 3D view, but if I had to choose only one, the 478 would win out. I've only ever just played with a few Nuvi's and was never impressed with them. IMOP, they are way too "dumbed" down and don't allow you to do what you want.