Red Command - Interesting concept, a Command Squad with teeth. Kinda wary of spending 50pts on a single squad, though.
Red Storm - This squad gives me chills. Add a Commissar with Badass for a mere 5 AP and you can dish out 23/1 against an adjacent A2 squad every round (not counting knives). I can't imagine an SSU player EVER not using this.
Matrioshka - The Fury of Ivan is finally here with insanely powerful cannons. I like that only the MG that's facing upwards can target aircraft.
Babushka - A true infantry meatgrinder!
Mao Zedong - Look at all those weapons! And that Quad 85mm is pretty much the best all-around weapon in the game.
Vladimir Lenin - Look at that mortar!