We have the B&W 20k Companion 5th wheel hitch (not the slider version) and have been extremely pleased with the hitch...other than the Ford dealer's mediocre installation job of the Turnover Ball (under bed) part of the hitch.
Hooking & unhooking has never been a problem. Chucking has been minimal during all of the towing we've done (~5k so far) and having the ability to remove the hitch completely from the pickup bed is a big plus.
The hitch is rather heavy though & I usually have to find help to safely get it to the ground. Someday, we will purchase a truck crane (MaxxTow Hydraulic Pickup Truck Crane for 2" Hitches - 1,000 lbs MaxxTow Truck Bed Accessories MT70238
) & that problem will be solved.
B&W customer service has been good both times I contacted them...once by phone & once by email.
We're very happy with our B&W hitch and would certainly recommend it to others.