A great all-around cymbal, the Evolution crash has a mid-range tone, a punchy attack, and a fairly quick delay.
HHX cymbals, like their HH counterparts, are hand-hammered by a Sabian cymbal maker in the factory. The HHX line has been modified from its HH roots by including Sabian's "Tone Projection" design - you'll notice much larger ridges and bumps on the bow of the cymbal.
This design increases projection and 'spiciness', effectively creating a more modern version of the already dark HH sound. These cymbals work very well every musical style, putting the HHX series among the most popular cymbals on the market today.