In the hand, it doesn't feel nearly as solid as the Nexus One—it's more like a hollow-feeling plastic than most of the smartphones on the market.
Dell, of course, has their own UI for Android. We didn't get to see much of it, other than the main icon screen you'll note in our lead shot. I just don't know why anyone would want the Mini 3. Nothing about the hardware immediately grabbed me like the Nexus One did, and it's stuck on AT&T.
You're free to feel differently.