If you use your wrist to play and a high sens you need a mousepad no larger than a few inches wide, what ARE you blabbering about?
it should have a decent frictionless surface
That comment says it all, anyone who uses an allsop clearly likes a certain amount of friction. Newsflash: everyone in the world is not the exact same.
I used allsop mats for a long long time, and although they're not the best for low sens, they're wonderful if you try and crank up your sens, or use mouse accel. I concur; everyone is indeed not the same.