I learned of this from seeing Victor Wooten use them. And since I've been really getting into tapping I started using them to. But I haven't been able to find one that's just the right size and type to work really well. Especially for my 5-string bass. They're either really thin, so they don't do as much muting as I'd like - or they're too big and don't put any pressure on the strings at all. So is there a specific brand that you guys use, or a special place where you buy them? Any help would be appreciated here.