RE: Japanese F3A planes
The biggest thing on the Japanese planes are the finish. The construction is nothing special, but they do put a great finish on it. I don't know that there is enough difference in the flying capabilities of any of the new F3A designs to say one is better than others. They all do some things great, and all have weaknesses. But they are all certainly competitive. They are all so closely designed though, if they all had identical schemes, most people would have a hard time identifying one from another.
Arch