Obviously everyone thinks the hitch they have in the back of their HD truck is the best. I won't even say which one I have but if I woke up tomorrow and Santa Claus had replaced my hitch with another brand, as long as it basically worked the same I could care less.
The original OP asked about needing a slider with a short bed. Don't know exactly what length short bed he has, but assume at least 6' or over.
Most folks that actually put tons of miles on larger fivers and use short beds trucks usually agree that because of the front design of newer FW's, a slider hitch is rarely if ever needed. The newer FW's are more rounded and edge cut on the front.
That being said, I went with a slider just so I would have it. Even though I have never needed it there could be a time when I would. If I ever had a really sharp cut on a huge dip that I absolutely could not avoid, then I may have to slide the hitch back.
So when you cut through several pages of "my hitch is better than yours" it may just boil down to your pocketbook and some general common sense.