הנה התשובה של INFINITY HOBBY לגבי המוצר -
"Yes. We once did preliminary test on FY-DOS for multicopter and it performs much better than FY91. The FY-DOS are actually more extensible (in term of functionality) compared to NAZA, and with high CP value at its low price tag. Just frankly speaking, we didn't do much tuning in our test fly on FY-DOS and it seems not as stable as NAZA (which is easier to start with as we didn't do much tuning either on NAZA). You probably need to take time to fine tune the FY-DOS to get best result. Hope this answers your questions."