Compared to the DX1, how does the DX2 compare? 1. Contrast 2. Brightness 3. Resolution (does the qHD compensate for the pentile tech?) 4. Color (DX1 seems a tad weak to me- is the DX2 more vivid?) 5. Touch response. DX1 has great response and better (IMO) than the Charge- as an example.