Sorry, without links, I don't have the time to research those two.
But in the most general terms, a mouse pad for me must have a cloth surface that's smooth, usually made from some synthetic fabric that the mouse will literally FLOAT over.
Then the backing of the pad should be (must be) heavy enough and tacky enough so it will stay put on the desk and not go sliding around while I'm playing a game against the clock. My ideal mouse pad should also be washable.
I see so many people with those 1/8" thick, slick plastic mouse pads that want to slide right off the desk. Horrible! Simply horrible.
I found the perfect pad for me at the Computer Warehouse in Orlando for just $1 each. Last time I was there, I bought ten of them. I give them as bonus gifts to my customers who don't have a decent mouse pad.
I guess this post didn't meet your criteria, but maybe it will help someone else, someday, on down the road.
Good Luck on your search.
The Doctor
