For $1000, everything I have READ says either AV123 or SVS, possibly Axiom. One thing I can talk first hand about is the AV123 X-sub. My G/f bought one for my HT system, and let me tell you, it ROCKS. 2 of them would be REALLY serious, but 1 would start you off right.
If it were me, I would get the AV123
-cs Center/Main/Surround Loudspeaker $139 on sale now with metal grill!
-x-sls Tower Loudspeaker $259 pair, black on sale with metal grills
-x-ls Bookshelf Loudspeaker $185 Black with metal grill on sale now!
-X-sub $199
Total: $782
You could even get the nicer fronts and/or CS's for the rear