I bought the top one 2-3 years ago, and I've used it many times. It works great! Before I bought it, I had read some reviews that it slips and doesn't rotate smoothly, but I've never had an issue with it.
There's also an off white one, same brand, same size, but it's about $15.00 cheaper. I don't know why. When I bought mine, I bought it from Amazon, and the yellow one was the only one available at that time.
Regards,
Kif
http://www.amazon.com/Fiskars-Rotati...ng+cutting+mat
http://www.amazon.com/Fiskars-14x14-...ng+cutting+mat