I found a deal on the Lectron Pro 2700mAh lipos on Amazon and pulled the trigger. I got 3 of them and today I flew with one for the first time. With my current configuration (Phantom 1, 8" props, DJI prop guards, extended landing gear legs, 2 axis gimbal, and GoPro Hero3+ Black) I'd get just under 6 mins of time before my voltage buzzer went off. I've got it set to scream once any cell hits 3.6. Today, on a somewhat turbulent and windy day I got around 7 mins and 30 seconds before the buzzer went off. The battery is hardly dead at that setting, but why take the chance of draining it any further? [youtube]http://youtu.be/b5DptsJQt8Q[/youtube] You can see in the video that the winds were kicking me around a bit but she held her own. Gotta love GPS mode!