Thanks for that Tony, I have a set from Amir thye look a bit different to yours as well as the price, they are more of a solid board than a textured diamond pad, yours look like Twister pads, no doubt I will give them a try when I need some more see what there like.
I do like The Satin finish that Twisters give though, it seems more Natural on Limestone and Travertine.
Regards Russ at Tile Doctor