I have not tried either one of those, but I have found a slip-on pad called "The Shooters Friend" that I liked so much I bought a second one when I got a new gun. Cabela's carries this pad and it only costs about 15 dollars plus shipping. I absolutely will not shoot 3.5" shells in my pump gun without this pad on the gun. It isn't pretty, but I value performance more than looks. Best of luck whatever you decide.