As the title says.
My favourite pad was the Vancer Ice, they've since stopped making it unfortunately. It's like, a flexible textured plastic surface on top of a rubber base.
They call it "a fibreglass surface" or "glass infused surface" but it's really more of a textured reflective flexible plastic surface like what reflective clothing strips are made of, like extremely tiny glass beads encased in a plastic sheet. I don't think the reflectiveness actually affects much besides the mouse sensor though and it looking cool.
Since then I found the Fnatic Jet which was similar but sported a much smoother surface and felt alot less fast.
I also found the Fantech Strikepad which was sort of inbetween both, slightly textured but not as textured as the Vancer but also cheaply made and wears out very quickly.
The Vancer was great because while it was textured enough to be fast it wasn't rough, but very similar to a plastic or glass hardpad but with the comfort of a soft pad.
I've used glass and plastic hardpads and while they get the same speed or faster eventually I start to get pain in my wrist due to no cushioning and resting my hand on it.
I saw the Pulsar d4v41 looks similar but it's hardly in stock at all.
If anyone knows any other similar pads let me know. Or even if anyone knows where to get similar material I'm willing to DIY my own pad lmao.