The DX is, it has a splined set-up, witch is way stronger than the cotterless Nimbus.
One thing about the DX, is the frame, its kinda weak, and will probably break withing 5 months, but no need to worry. Torker has lifetime warranty on their stuff, send in the broken part, get a new replacement, or for 42 dollars you can replace it with the Nimbus II frame.
The DX is still worth getting cause you wont need to upgrade the hub for a long time.
jerricks got it in one. the torker is much better apart from the frame and then you’ll have a nimbus/torker or a torkebus.