ice mat is awful (the sound of it scraping when you move the mouse!) and too small for a glidy mat.
goliathus SPEEEEED (glide) edition
I agree with the first bit, but glidy = frictionless regardless of size.

thats like trying to ice skate in a frozen over paddling pool!

ice mat is awful (the sound of it scraping when you move the mouse!) and too small for a glidy mat plus it has a bit more friction due to the cloudyness of the glass. It gets really diry after a while too.
Any of the steelseries listed above and the razor exact mat (which i recommend) would be fine.