[citation][nom]frozonic[/nom]the only thing i hope is a decent 15 hours battery.... but i know thats not going to happen[/citation]
I've got the s2. I charge it at night, and by the end of my work day some nine hours later, I still have 80% battery left. I don't use it much during the day, and keep 4G, WIFI, and Bluetooth off during the day because I don't need them. I also use it to play audiobooks for hours at a time without battery issues. Even though I use it a lot in the evening, I still have 50% battery by bed time. I never even bother bringing my extra charger with me since I haven't used it for months.
If you are having battery issues, install Juice Defender, uninstall any music syncing programs, and turn 4G off when you're not using it - these things will help it last so much longer!