I use the hi-hat for just 3 weeks. I played for 10 years on a 13-K "and I know that this kind of book does charley mysteries that after a bit of time. But perhaps playing on a K allowed me to quickly understand all the sounds of these cymbals.
The sound is very very distinctive and can be daunting at first a lot of chopsticks. Indeed, as the name suggests the sound is very dull and very very "dark". The openings in charley are fat but not very "bright". As with all K, the Deffinitions shots and the projection is excellent and it is a joy to enchainner the triplets above.
My previous was a charley Bosphorus Masters series and I had to change it because it was too Jazz typed and not very powerful for my style of play (Rock / Fusion / Funk). It was also much warmer than the K but can "draft" in the definition of blows.
The K Custom is really perfect for my style of game but I do recomand not jazz such as not friendly enough.

When the price / quality ratio, I find it very expensive especially compared to Istanbul / Bosphorus doing charley excellent for much less. Now as I had for not too much I can say that certainly I would do the same choices.