I've just got an Ibanez Xiphos XPT700XH (27 frets!), about 3 months ago, looks brutal as anything, and is amazing to play, although costs a fair bit, I got it for $1750 AUD so USD thats probably around..... $1300-$1400?
Has a floyd, so downtuning you'd want to keep it it one tuning for the whole time, or change the tuning very little. I don't think you can get a 27 fret without a floyd, but I'm not sure.
My thoughts on a floyd, although I'm pretty new to it: Good: Sound really cool if you know how to use them, it's good fun, they look cool, they keep your guitar in tune, which is really helpful, but on the bad side: If you break a string gigging, or live or something, your pretty much screwed, and would need a second guitar handy, changing strings isn't as bad as its made out to be, but it's still not the easiest thing in the world to do, tuning down takes about an hour of fiddling with spring tension.
You can get Ibanez Xiphos 24 fret guitars without floyds,(XP300FX), the earliest/first xiphos, and they're metallic / shiny haha. I'd recommend these, still have the same brutal look. Just has 3 less frets, and are a little cheaper than the XPT700XH (27 fret). They come with or without a floyd.
And on 7-strings, never tryed, but I think you'd have to adjust to having an extra string, I'm not too fond of the idea myself.