When I bought my dually it came with a Curt hitch. I hated that thing with a passion. There was no way to lock it closed so every time I would stop I had to lock the trailer brakes and back the truck up a few inches and get out to push the latch back in. I eventually put a ratchet strap on it so I didnt lose my trailer. It was noisy and just a POS. Last year I upgraded to the B&W and never looked back. Selling my Curt on Craigslist paid for 1/2 of my new B&W.
The only improvement I can think of now is a new truck that gets better than 5 MPG. :)
