Meant to add that. My IS3. I have all upgrades (gun etc), working to IS4. Won't go to IS7, will probably rework german or US trees. Wait and see what the upgrade to the russian tanks brings us i guess. Got about 150k xp in my KV and KV3, so we shall see!
I hope ill rake up inough xp to upgrade the KV with some mods right away, dont look forward to loosing crew level again though, they been through some ruff stuff in spgs and now tanks if I was one of them I would start a union
Bought a Slugger, but no upgrades yet (besides previously researched engines). His Wolverine gun is puny for its tier, but I heard all good things about his next, 90mm one. All I can do now is to try to detrack big guys while hiding behind comrade's backs