I have one, the T-34.
It's hard to use. It doesn't drive like a tank (eg, two levers, one for each tread), it drives more like a car. It's a real pain to get running, you need to charge it for up to 10 minutes before use then go through an initialization routine that can fail (it needs to talk to the tank every time you turn it on).
If you buy one, make sure you have more then one or know someone with one. Having one alone is boring.
