Great news! I am replacing Bionic with a DancingNexus this week... What are the consensus ideas/choices for: 1) Battery - Are the extended batteries a no-brainer? I managed decent battery life with stock battery for Bionic. I am not a fan of bulking up the phone... anyone know if it is better or worse than Bionic? 2) Rom - Geared toward good battery life and features... currently running Bionic Eclipse 2.2. 3) Necessity of screen protector/case - I went naked with the Bionic and never needed a screen protector. Is the Nexus any different? 4) Any other caveats that would be helpful knowledge at the get-go? Thanks!