advice from seasoned veterans

Jaguarz:  It can be less about tanks and more about compilation, you can do MT-15 in any tier but 10 has biggest pool spread so platoon with 2 buddies in TDs to propogate them on other side via MM (hopefully) and play a Batchat 25t because one clip is 80% of the job done. HV-15 I find the Pz7 my most effective tank to bounce stuff in because people cant resist shooting the lower plate but its not a weak point and you can angle it to be impenetrable to even jagzilla HEAT rounds. TD-15 you can use literally anything from T8 up effectively, I did mine in a SU-130PM