How's the build quality of the Atrix? I've been playing w/ it at the store, and seems pretty solid, albeit a bit light and "plasticky". The other phone I'd be comparing it to is the upcoming HTC Thunderbolt (yet to be released). A few of my friends have the HTC Evo and love it - I believe the T-Bolt will be almost identical physically. How does Motorola quality generally stack up against HTC? Can owners comment on the build-quality of the Atrix vs the D2 or DX, or even the HTC EVO and Incredible (light leakage, gaps, etc)? TIA!