At low levels, I really hated to be stuck with machine gun calibers. Like when I flew the first Spitfires, I despised their weak as hell 7.7 guns, even in the first Typhoon plane, slow as a cow, and weak as hell. It was better off in the later Spitfire versions, at least armed with quad 20mm and the Premium Typhoon, which I bought immediately for increased fire power.
That's why I prefer to fly germans. Just 3 words BF109-G10+Triple 30mm=Ultra Overkill.
I cant wait to unlock the ME 262 with quad 30mm. However, powerful as they are, they arent turn fighters and are just used to climb, dive, boom and zoom.
And their repair rate is the highest in all the nations.