When you ask 'What kind of guitar for Metal'. What is your concern with that question?

If tone : I'd be willing to throw out that you can get probably just about any tone you want or close too with any guitar using FX.

If playability : Probably something with a thin neck. My Jackson has a thin neck. I really like it. But, that's really just preference.

I dunno man.. It's all about preference, what style of guitar feels good to you. There really is no right or wrong. You could probably use a Les Paul if you wanted. Again... All about the preference and what feels/sounds good to you.

It's all subjective.