I just bought a new 5th Wheel. I have had one before and it came with an old hitch (don't recall the brand but it was nothing special). My new 5th wheel has a GVWR of 12,000 lbs - Dry Hitch of 1625....
Just bought a B&W patroit from Tweedy's.com $399.80 very nice hitch.I think the rail kit is about $160.00. The workmanship on the hitch is second to none plus it is American made with American steel.