ESP/LTD, Ibanez, Jackson, Caparison, BC Rich and Dean are pretty much the go-to guitars for metal.
For the love of the metal gods, just don't spend a fortune unless you're rich. I would just go to the nearest guitar store and try out a bunch of the brands (and more) that I mentioned.
Quick rant about guitarists:
I know so many people who have spent in the range of 10,000 on just a guitar and amp head because they're convinced they need a custom made Caparison and Engl Invader tube amp to sound good when they don't even know what a "scale" is half the time. That kind of gear is made for like, the pros that play 200 shows a year with sponsorships and corporate backing. With the kind of money that these people spend on just two items, you could get a decent guitar, amp sims, virtual instruments, recording software and even still have some cash left over for professional re-amping, mixing and mastering. The cost of some guitars and amps are enough to pay for a music education for christ sake.
Basically, people, especially metalheads and sales people, will probably recommend you all this high end shit you don't really need. Stick with the cheaper, but quality instruments unless you really have nothing better to spend the cash on.