The best way to pick a cymbal? Study what some of your favorite drummers use and choose your cymbals accordingly.
That's sort of like choosing a guitar, but its much easier in the case of drummers. Let's say someone was heavily influenced by Johnny Ramone and wanted to pick up a Mosrite Ventures II guitar and Marshall amp for that "authentic" Ramones sound. Grabbing a Marshall amp is easy enough, but finding an authentic Mosrite is difficult and expensive and modifying it to meet Johnny's specs would be even more difficult.
You just don't find that level of customization -- and rarity -- when it comes to cymbals.