I have the B&W Slider Hitch and love it. I never need to worry about crunching the back of my cab, the rig, or worse both.
You"ll hate yourself after crushing things and things happened. Then there is the DOW! And if you don't have it and you do crush them, now you have a larger insurance claim, just saying.
Since I have had it. I have used it twice in tight areas. Small parks, tight camp spots. The comfort of knowing that I have it if I need it is priceless. Wouldn't do it any other way.
Check out my signature below.