Any reason in particular why you're going to look at An Economic History of the USSR 1917-1991? I'm keen on improving my knowledge of the USSR and would like to look at a retrospective account that isn't completely anti-communist. Have you heard that An Economic History provides something like that? I'll take a look myself if yours is a recommendation.
Is Mutual Aid: Building Solidarity During This Crisis (and the Next) the one by Dean Spade? I picked up and flicked through it last week. It's not bad. The parts I read were quite US focused but that's not necessarily a problem. I quite like the format of this series (it's got a similar design to two books by Malm) because they're not intimidating and easy to pick up and start.