Captains Of Crush vs. Heavy Grips

So has anyone here used both…?

I enjoy my Captains of Crush gripper, but I wonder how the slightly cheaper one compares.

If the Heavy Grips have a smaller span, does it inhibit it’s performance?

Does it have that same sandpaper knurl to it that I enjoy so much with the COC?

Do they ship for less than $6 bucks (S&H cost of the COC brand)…?

Here’s a T-Nation review in case you missed it: