First post so just wanna say what's up. I'm looking hard for a Z2 as I feel the jump over the D3 is worthwhile. As far as the nav graphics are concerned, is it a big difference over the D3 or is it the same? Also, I see there are a number of places to get this on the net especially the bay, is there any company or companies I should avoid. I figure the places that are getting rid of them for a grand new in box should throw up a red flag but just want to ask to be sure. Thanks for any input.