I have used DS2000/2500, but did not like them at all.
I found they faded too easily and had a very dead feel to them, took a lot of warming up before worked decently.
I changed to EBC REDSTUFF CERAMIC, they are way better, apart from being dustier, plenty of feel, only faded once.
Have also used over the years Mintex 1144 1155, Pagid.
tabetha