I have the 3600 in my rig. My 2 cents worth...lessons learned:
I've been pulling 5th wheels since '98 with short beds. In that time I've made two mistakes, both based on laziness on my part. The first, years ago with my '01, was not taking the time to release the slide when backing into a familiar campsite. The site had a nice deep pot hole and as I had the trailer in a near 90 degree angle, hit the hole and ended up with a nice dent in the cab. The worst of it was a seam separation on top of the trailer that didn't show up until the next spring in the form of water damage to the front. The second and most recent happened when I decided to leave my tailgate on rather than installing the 5th wheel tailgate. I thought...short camping trip, why bother this time. Well all was fine until I got home and went to back into my driveway. It is a perfect 90 degrees off the street. I always slide the hitch back to maneuver in. Across from my driveway the street isn't curbed and it had rained for days. When the truck dipped off the asphalt in that angle, the rear tire sunk nearly 8" and up popped the other side and tailgate met gooseneck. My gate looked like a can opener had been taken to it. Moral of this story, if you love shortbeds like I do, NEVER take shortcuts.
The biggy for me with this hitch is it HEAVY. It's not a one person job. I have a hoist to get it in and out. Other than the dump stuff I mentioned, I recommend the B&W.