I have used both on other cars.
Yellowstuff are a good fast road pad and will hold up ok on a track day but give of a lot of dust so be ready to clean your wheels a lot .
Ds2500 I had a bad time with, after doing a track day at cadwell park I had to have my discs skimmed as the pads had left build up deposits on the discs which gave them an unbelievable amount of judder when braking .
My personal pad of choice is Pagid RS29 yellow , pricey but brilliant