One big thing I learned about buying something on pre-order (aka the RKE). WAIT. Though it is nice to have the newest coolest toy on the block, let everyone else work out all of the bugs. When it comes to a controller, bugs are the last thing you want to have. Mine is working very nicely now but I had lots of little issues for the first 6 months. I am sure this one will be no different as there is no way to test some of the little things until it is out in multiple tanks with multiple situations.