Here is My Quanum nova quad about 1500Ft (guess) high. I was testing out the radio range and pushing the quad through its paces. with full forward flight speed of 30mph with Zippy 2800mah 11.1v lipos. I've had about 35+ flights with no problems,The only problem I've ran into is that the Return To Home works about 90% of the time meaning if its not calibrated properly it will not return to home but will fly in a huge oval at a high rate of speed!