I have the same TV as you do and only have the Pullrite Superglide because I needed it when I was towing my Carriage Cameo LXI, so I transferred the hitch from my 2003 QuadCab to my 2006 MegaCab. I really wished I hadn't. I lose bed length from the hitch to the tailgate because I have to allow for the 14" of clearance that the slider needs. It also adds the 14" when I am backing up into my narrow driveway from a narrow street, which is not desireable.
If I had some other slider, it would not have been so bad.
My impression is to save your money and get a regular hitch. Although your best answer would be from someone who owns a MegaCab with a BH and a regular hitch.