HaT T34/85s, with a couple of platoons from my Guards Regiment; Dave's' still painting his, I think tread-heads always leave their figures until last!
Italeri's IS2s. Quick build kits that look quite good when painted. These are also very reasonably priced by modern standards, however, unless you're gaming 1/1 how many IS2s' does one need?
Another Hat winner from the later war tank destroyer formations, this one an IS122 I think - not really that up with late war armour from any nation.