Clockwise from the top left, that's the Sprint Arrive, the likely-for-Verizon Merge, the Sprint Evo Shift 4G, and the T-Mobile G2. If we had to rate them, we'd say the Arrive has the best key feel, followed by the Merge, the Evo Shift, and finally the cramped G2 -- although the super cheap-feeling hinge on the Evo Shift knocks off several points. We'd also say the physical keys on the G2 feel better than the mushy keys on the Merge, but the G2's cramped layout doesn't do it any favors. In any event, picking one of these is a pretty great problem to have, don't you think?