I also recommend the System 6. It has all the speakers you need in one bundle, including a subwoofer.
You might want to check out acousticsounddesign.com. I bought a center channel speaker from them last week and got a great price and great service. They currently have the system 6 on sale. I copied the following text from their webiste:
"Special Price: $699.00
The Synergy System 6 is the worlds only horn-loaded home theater system under $1,000. The nine pound, 12.5-inch SB-1 mains, multi-angle enclosure center channel and 180° surrounds all utilize square Tractrix® Horns, delivering consistent, balanced, high-performance sound across the board. The system comes with a KSW-10 subwoofer to maximize every explosion, car chase and shoot-out. As youd expect, the Synergy System 6 has the appealing, stealth-like styling of its larger Synergy counterparts. "