Purchasing the latest model for my brother, I realised it had major improvement. Better smoother remote, double King pin chucks, even for the drive chuck. Double King pin chucks are very difficult to find, let alone specialised ones for hub motors, but they shipped me out a set no problem.
The updated speed controller/remote is specially created for duel hub motors using some technical way of delivering power equally. It's also water resistant too, big improvement as the smallest puddle proved deadly before. And as always, fast free shipping from China, thanks AEBoards.