Are russian mbts good past 8.3?

I have 8.3 russian ground and 10.3 russian air so i was wondering if i should keep going or do the usa (where i have 7.0 for air and ground) i am a little behind in the light tank line and honestly never grinded aa (it was my first tech tree to ever play dont judge lol). I really want some good top tier tanks.

can tell you from playing 8.3 recently… they are formidable. and have plenty of leopards to have easy kills on as the players are trash

T-62M, T-80B, T-80BVM, T-72A/T-64A are solid. Pretty much everything else is just bad though.

Yes, you also get excellent spaa.