Personaly im using an old ass icemat and i still love it, steel series make them now (i think they merged the companys or something), experience I-1 and I-2 if i remember right, glass with nice solid rubber feet, it never moves or shifts from what ive noticed but if you prefer soft mouse mats then i wouldnt recomend these realy.
i7 970 - NH-D14 | Gigabyte x58a-oc | Corsair AX850 | CM Cosmos S
6Gb G.Skill Trident - 1600Mhz c7 | SLI GTX 580
-Need to fit-
Xspc Rasa | Phobya G-Changer 240 + 360 | Phobya dc12-400 | 7x Orange Xigmatek XLF 120mm | 2x EK 580 blocks | Alphacool Copper fittings