Well, its been about 32 hours with my EVO...and im loving it. I admit, the battery worries me a bit. However, some commonsense things (and not so common sense, like the GSM/CDMA battery life change) have really helped. Task Manager seems to be the best overall task killer app, and keeping background data on but auto sync off seems to be a nice happy medium for syncing. The major, MAJOR battery drainer? Google Maps/Navigation. The perfect argument for a car charger that can EVER be made. Ye gods. So I unplugged it from my charger at 11 this morning. As of right now at 6:43 pm i have 41% battery left, have been fiddling with it for about half of that time, and turned disabled the data connection while i was in low signal areas during a short road trip. Moderate use of Yahoo Messenger, texting, a few 5 minute phone calls, the occasional manual update of the Seesmic twitter client and a few other things have drained it a little bit...but a 5 minute stretch of Google Navigation? Did the most damage to the battery, knocked it down by 7 percent. Again...car charger. Need this soon. Anyone know of any reliable ones? Other than that, great phone. Versatile, and I'm looking forward to the day that Android 2.2 comes to us for even more battery efficiency. Please feel free to ask me anything about how I have things set up, constantly trying new things out on this!