wow, that's a huge budget! are you sure you want to spend that much on a 7-string?

well, if you've already made up your mind, then I say that schecter makes a C-7 blackjack, much like the C-1 blackjack, which gets wonderful reviews, except with a 7th string. and you'll save a few bucks that way... if you are looking to spend all your money, you can check out the ibanez K7... nice and expensive for ya!

keep in mind, I've only played a 7-string once in my life