I'm a proud new owner of a second hand quark (thanks 5exi) and I'm trying to gauge which heli I should put it on. Should it go on the Blade 450 or the Trex 550. My thinking is that the standard gyro on the 550 would be better than the gyro on the blade. This is purely based on cost as I have not used the the GP780 yet. I know that some will say that I should bin the 780 and get another quark and fit them to both...not spending any more money on upgrades just yet or I might find myself out in the cold with the dog!