I have a 2017 Ram with the 6'4" bed without a sliding hitch. I have a standard B&W Patriot 16K hitch. With that being said, I have a 2019 FR Hemisphere 5th wheel. The nose is very rounded and cut back at the bottom edges of the nose. If it had a more traditional "squarish" nose, or I had the smaller 5'8" bed I would definitely have a sliding hitch. I think manufacturers are rounding the noses on 5th wheels because the short bed trucks are the most popular and they want to maximize sales of their trailers. For some, having to buy an expensive sliding hitch would be a deal breaker. With my set up, I can get to almost 90 degrees if I had to. So far I haven't come close to needing to get to that severe of an angle. The closest the nose has been to the cab of my truck is about 10" away. I think if you want 100% complete peace of mind then get a sliding hitch. If you know ahead of time what the limitations are, you will be fine.