Before anyone starts BS about planes not being reliable or having poor after sales service check first the operational levels in Western airforces. For example in germany Typhoon , only 1 in 5 is operatinal ,manyother of the NATO fleet are below 50% operational .

As for future stealth fighter ,its not Pak Fa but a Smaller plane to be developed with Mig. People commenting on Pak Fa forget its a private venture development of which cost peanuts compared to any other ongoing projects.