For those that used both of these are they the same, close or different and how different which one is the smoothest/longest slide of the two?   Anyone know?

Thanks!

Black Ice is a little longer than the 3G Felt 

Have you used both or are you being facetious?

No I have used both. I tend to stick on synthetic approaches. There is a little more slide out of the Black ice. Maybe a foot or so. Enough to make a difference

Thanks much!