I use currently the Roccat Tyon mouse.
The sliding property is good, who is accustomed Hardpads however, will notice the resistance is felt, there are soft pads where the mouse over it more easily slides that I feel but as too smooth and flutschig.
Others are also sluggish.
PureTrak is a good mediocrity succeeded.
The pad is with 357x477x6 mm quite big and fat, who plays low Sence, will appreciate that other prefer the rather smaller pads, I recommend the pad simply centrally through cut, then you have the same compensation.
Another positive aspect is that the manufacturer promises that you can wash the pad in the washing machine, I have not tested it myself.
Mir is a slight smell noticed smells kind of funny, but not pushy. Hab get any headaches, or feel discomfort.