This product annoyed me so much I actually sought it out here to write a review.
I receive this as a gift to go with a new gaming rig, so was very pleased especially when I found out its marketed as one of the best gaming surfaces out there.
However I was bitterly disappointed! Like other reviewers here, its clearly designed to be used with Razers own mice, but unfortunately I have a Corsair Vengeance M90, which is a great mouse, but put it on the Megasoma and it quivers so much. Its like your mouse has a ghost controlling it and will quite literately move across the whole screen without being touched. No matter how I tweated the settings, it was completely unusable (no exaggeration). The M90 does state in the user manual that it prefers darker surfaces, I wonder if the Megasoma came in black whether it would work.
So currently I'm using the mouse directly on the table, until I get a different pad.
Be WARNED, check your mouse will work with the Megasoma before you buy it. Its probably great for a few mice, but certainly not all.