C47, cuz it's full of angry drunks
Airframe-wise: Tempest, P51, K4. Temp and 51 because they close distances so quickly while you are occupied requiring a higher SA "refresh rate" in a fight. K4 because as soon as you start heading home alone, low on ammo and fuel one will auto-spawn on your long 6.
As for highest concentrations of pilot quality: A P38G or J is interesting followed by 109s followed by INK, his metachlorian count is amazing. I always seem to eke out the win, but the requisite 6 friendlies might have had something to do with that...