They fly great- smoother than the Sun Fli 3 or 4. I have built all of them (built 4 of 4's) and the 5 is great. For a few years Bridi was kitting each of these again but they haven't been picked up by the new folks selling Bridi designs. Might be worth a call to Sheldons, they were a big distributor of Bridi kits and may have some left- they were however selling what was left on ebay so they may be gone.