Favorite types? My favorite fighters are P-47 Thunderbolt (Razorback), Hellcat, Corsair, Focke-Wulf 190, La-7 (yup, I like air-cooled engines mostly) and Me 262 (I like the shark look of its body).
Brits? I never dug the looks of either the Spit (those elliptical wings look too playful to me) or the Hurricane (hunchback!), if pressed I'd choose Hawker Tempest/Typhoon.
Ken can't really tell them apart too well.