You've got $1000 and you're 80% HT? This is an easy one.
QS4's and a
Hsu STF-2. That's only $679. Buy some DVD's.
OR if you want to buy a beast of a sub, that'll you'll likely never need to upgrade regardless of where you move, you could get the newly released
Hsu VTF-3 MK2. At $699 it's by far the best bang for your buck subwoofer available. But that would push your budget to it's max.
Seriously though, if you're setup is for 80% HT, a killer sub, and some new surrounds is what you should be buying.
BTW...get your Axioms from their factory outlet. Why pay full price?