Inspired by Aimstrong's opening:
-> T0, 4 cons
-> T2, Maxim (or 2, depends on map), ZiS and occasional shocks if needed
-> T3, SU85 + Katy
After that I have enough AT (zis, su85, at nades + mines) to hold out till IS2 + Katy to fend off pesky blobs.
Additionally, depending on situation I'm getting one extra Katy or SU85
Lately, the above build was quite efficient against same-level players.
That's T4, but w/e. I was going to write the same thing. SRFT goes very well with T2 and T4.