Meinl 15" Byzance Dark Hi-Hat

First of all, it looks very badass in the set. Its sound is very dark and noticeable in the mix. They are very pricey, but you get what you pay for - sounds very strong and complex, very dependent on your playing.

The only downside is that it's quite heavy and thus very difficult to control, at least in the beginning. However, once you get used used to it, you can get very rich sound out of it.