I went with the ARF version of the NexSTAR to avoid having to check the motor mount to firewall bolts. I'd have to install them myself, I'd know damn well they were loctited in place and not going anywhere, that the radio would be installed right, that the angles would all be good, the battery pack would be of reasonable(IE: biggest mAH I could cram into it) size, and that it would balance well.