While cheaper cymbals have nasty overtones and more expensive ones have character and breadth, the Xs20s are somewhere in between. If you're moving up from Sabian's B8-Pros you'll be in heaven, but ...
Those stepping up from beginner's cymbals will find the Xs20s noticeably nicer on the ear. For that extra timbral character though, you have to take the next step into the realms of really expensive ...