Full disclaimer - I don't play drums, my son does. But at 9 years old this was his first quality cymbal that was recommended by his drum teacher as comparable in quality to some of the better known brands, but of course without the same price premium.
I can only report back that even to my untrained ears the tone between this cymbal and the stock cymbals that came with his beginner set is astounding. I have already decided that his next cymbal purchase, a ride, will also be an Istanbul...