T34 85 is experienced enough. Which car is better, T43 or KV 13?

I am KV 13 transferred from KV. I'm not a professional player. I only spend about an hour a day. Now my S series is heavy to IS3 and medium to 44, but I tell you that kv 13 is complete and absolutely a good car. First of all, he has good protection and strong survivability! It is 10,000 times stronger than T43, and stronger than Panther and T20. Secondly, his mobility is very good, and he can easily run to 59, which is beyond the reach of the other seven grades; Third, it can be regarded as his weakness. His firepower is not good, but his penetration and loading speed are good. It's easy to kill tigers, is and the like, and the overall housing allocation is also good. Now it is my reserved car, and my experience value has reached more than 300,000!