My humble opinion on markers...
Crayola markers never worked well whenever I bought them (or had them bought
for me...several times !) Defective right out of the box. Lousy life span
for those that did work. I ALWAYS order Mr. Sketch chisel tips for thick
markers -- and have some that are 2 yrs old and still going. I always get
Fiddlesticks for the thins.