Easiest to fight in are the DR1 and F2B. The DR1 is the best turning plane, is the strongest and takes the most hits, has the best climb rate, but is the slowest by a few mph. The F2B is the fastest, turns very well (only a little worse than the DR1), and has a rear gunner. The D7 and F1 are both very difficult planes to fight in. The D7 turns the worst out of all 4 planes, except in a clockwise turn against an F1. It's fragile, doesn't take many hits, and suffers greatly from damage. The D7 does have a few advantages though. It probably dives the best, has the best roll rate, and doesn't suffer from torque problems. The F1 has roughly the same climb rate as the D7, but is a little slower. Its turn rate is similar to the F2 in a counter clockwise turn, but in a clockwise turn it's similar to the D7. The F1 probably dives and rolls the worst, and has very nasty gyro effects.