Falcon
what i have learned.

just have to get used to the different features of each plane. If you only lean how the spit fly's and manuvers and do not take the time to learn the other you will alway end up in a chute or worse. When u fly try to take some basic advantages.
nk1- good turn fighter (4) 20mm guns (deadly) but level top speed slow
spit - medium turn fighter (2) 20mm guns 50's or 303 mch gun level medium speed
c205- not flown
p51 - so-so turn fighter, 6 50's, level med-high speed.
f4u - similar to p51 just looks better
(i know i get flack over that one)
190- Very fast and deadly but can not turn.
Hope this helps, I am no experts there are plenty here thou. I sure some will correct me if i have miss any information, but you will learn from all that comment.

good luck
RC