All the planes are pretty much the same. By that I mean they alll have there strenghts and weaknesses.
Twin engine palnes are the easiest to land and take off with, with the P38 leading the list. No engine touque problems to worry about.
Flying and fighting, the La's, Nik's and spits are probably the tops of that list. Pretty stable in flight, easy to recover in spins and stuff, and cannons that will hit pretty hard. Low ammo load however.
American Iron, P51's P47's, P38's, lots of ammo, but mostly 50 cals, and you need to land more hits in a given area to do some real damage.
Great Places for a lot more indepht info are
Soda's Plane Pages and
Net Aces ...oh and welcome to Aces High!