I run an XXL in Cicatrix and its so smooth compared to the BotBitz ESC's in the kits even though its not an official XXL. Albeit they're the 25A versions of the BotBitz but we'll see what happens. I've ordered a set of both anyway, as one will get used in Rover. Voltage wise I may be pushing the BotBitz ones a bit high at 24v nominal too.