When I was first starting out as a drummer I never even glanced at Istanbul's, my brother-in-law was endorsed by agop specifically the Alchemys. He got me a deal on a:
17" Alchemy medium crash
17" Alchemy Power crash
The power crash is a little too thick and doesn't suite the music that I play nowadays. I think to have such a thick cymbal it needs to be larger or some problems to arise, especially when one is not utilizing good crash cymbal technique. Which is something that I was awful at. My power crash has a solid crack going. So sad.