If you end up getting the Evo 3D, just hang out around these forums. A lot of us will be around to help you get the phone working nicely. I didn't mean to imply that battery life is a ongoing process lasting the entire lifetime of the phone.... actually, once you get it configured to your needs, rooted or not, you're all set. No more tweaking necessary. We all reach a steady-state... except for the hardcore people who want to try every ROM possible..
The good thing about science is that it's true whether or not you believe in it. -Neil deGrasse Tyson
Help me out: Sign up with Dropbox and we both get 250-500MB extra space. Thanks!