whats the best tnb fighter with deicent top speed

U guys are awesome! Question for ya. The Yak 3 and the Yak 9t appear to fly the same to me. With the exception of firing the guns. The 9t vibrates all over the place. The big gun probably, but the armament says its a ony a 20 30 mm. I was thinking of using the 3 in snowy conditions and the 9t in summer conditions. The camo doesn't work the other way around. So is the 9t as good as the 3? And is the supposed bigger cannon a plus on the 9? Or just screw it and fly somethen else.