I like to fly 'em all at some time or another.
Jugs are about my favorite 'fun' ride, although I often don't have much more success with its 8 guns than I do with the 202, which is my favorite 'turny' ride. Tiffies are about my favorite if I really want to kill something, it's guns are great, and it's fast enough to press an attack. Strangely, I haven't found myself using 190s very often, I'm gonna have to start flying them for that very reason.
I like 109G2s and F4u-1ds just for the yellow noses (even though the F4 *is* blue), and I wish we had a yellow nosed Jug, too.

The plane I'd most like to be flying is the P-40.
If there's a scenario, or I'm reading a good book about a particular aircraft or area of the war, then that'll almost certainly decide what I fly most of the time.
anRky