If the budget is hard and fast, you should look at the Bazooka Tubbies. I'm pretty sure 4 of them can be had for 1K or less. If your wanting more upscale performance, and a 2 year warranty to go with it, you can look at our Demo XM7's. 4 of them should put you right at 1K. They go for 30% off and tend to get scooped up pretty quickly. If you want NIB, the XM9 begins shipping 6/17 and offers increased performance in a damn compact package.
It should be noted with any of the speakers that get mentioned, you're going to need to power them properly. Don't strap a cracker jack amplifier on these setups because you'll be let down. 150+W minimum is needed. I'd start there and pick some speakers that fit the "bill$" and also match well to an amplifier.