im using steelseries DEX.. my dad bought it for my birthday (i didnt tell him which one to buy so he bought the most expensive one lul).Its kinda small but for me its good, fits good with my sensei raw.I won't recommend it to you if you want bigger. the blue ones from zowie are better and qck heavy maybe.
Forgot to say. I had Steelseries QcK+ with SK print since 2009 and after 5 years it was almost like NEW, although I washed it few times. I gave it to my girlfriend and bought QcK+ without print (plain black). After 2 years of not very intense use it has had pretty bad condition... So I bought QcK+ with print again. I believe I won't need new mousepad in next 5 years at least. xD