I just upgraded the esc to an Align 25 amp with governor and a Castle Creations BEC to power the Spektrum RX, servos, and gyro with a constant 7 amp availability of 5.1v. I only had a short hop on the back porch, but I immediately noticed two things. The governor really saves the guesswork of programming in a throttle curve, and the BEC makes a big difference in servo response. It even seems to make a difference in the gyro sensitivity, because I was getting a little wag like I may need to drop down the gain a bit. My next upgrade will be a decent gyro, and then higher end servos. Once all that is done, I can transfer all the guts to a T-Rex and by then I should be able to fly well enough to not have to repair it constantly.