I like the PRang professional. BUnki recommended them to me. All color pencil
work from my students were done using these. Cores come loose but I glue them
back using white glue..
I do not like Crayola. Too waxy and don't blend well for my liking.
But different strokes....
Mike Sacco
Paul J. Gelinas JHS
Setauket, NY
www.myschoolonline.com/ny/gelinasartdept