Now I have 4 brands of c/p's, my Prisma's.Derwent, Dick Bick's & Poly chrome. The Dick Blick color blending pencils blends so much better than the Prisma one. I now have to use less hand pressure w/the new tech's.This is my tool of sanity. Last Wed. I was still awake @ 4 pm because of a screw up w/ my nite meds. I was in my room coloring since I couldn't sleep & pain was shooting thru my body.