The Ratpadz XT has a really nice surface which performs really good. The pads would gain a much higher score if they where bigger and thinner, because they are 0.6cm thick makes the pads uncomfortable.
The design of the pad itself is quite good, the arched design makes the usable area of the mat so much bigger and increases the comfort while using the mat. One of the things that really impressed me with this particular mat is the durability, every thing about the Ratpadz XT is made to last.
My main reason for giving this mat the overall score of 8 is because of the comfort or to be precise the lack of it. Everything else is really well constructed, and performs great.