RE: Which WWII Warbird?
If you are looking for a kit go with the Top Flite Giant scale birds, the Corsair would be my choice.
If you want to go the plans built route you cannot beat the Ziroli designs, they are straight forward builds and have great flight qualities. You can get a short kit from a kit cutter or save a few $$$ and cut it yourself. I have cut several Ziroli kits and I can usually cut one in a weekend.
Anthony