I like both, the 109's and the 190's.
My favorites are the 109-K4 and the 190-D9. That just because of speed. With this planes I don'T have to let the runstang run. I catch them from their six.
My K/D rate is normaly in a 190-D9 better than in a 109-K4 and I know the reason.
I never take a turnfight with the 190 and I never are at lo deck fight with this plane. And that is simply the reason that I won't get picked so often from a high speed tiffy or runstang.
In a K4 i like turnfights. Many people underestimate the K4 in turnfight. If I really come in trouble during a turnfight the K4 allows me to leave the fight by its good acceleration. So i get some distance, outclimb the foe and come back to the fight with a good starting position.
But however, the K4 is not as half as good for bnz like the D9.
And that is what the D9 do best, bnz.