I haven't ridden the Drone, but I asked Brock about both of them. He said the basic difference is the tail.. The Drone's squash tail is great for airs, but not so much for spinning. The Nubstep is a little more of an all around board that you can carve/air out, but potentially do some spins on, so that's why I went that way. I've heard the Drone is great though.
'19 MAX
'13 Mobius LSV - Sold
'05 Mobius LSV - Sold