Get a guitar that feels confortable to you. Thin necks are most associated with shredders, but if your hands are too big, then it can be a band thing. Zakk Wylde cant shred on any guitar but Les Pauls. And some people cant even put their entire hand around the Les Paul neck. It really depends on yourself.

But take not that most shred guitar necks are satinized and not glossy. Which makes your fretting hand glide across the neck and doesnt friction upon sweat buildup.