Like others have said, no reason to wait in BF lines. You can either order online, or buy now and pricematch that morning. The no price match policy usually only applies to doorbuster items, and BBuy often has unique SKUs to avoid that problem. You can usually get items like this well into the late morning once all the crowds have dissipated.
If your Best Buy is like ours, the Klipschs are set up next to the Pioneers and Polks. Try them all, turn the volume up on the Pioneers. When I first heard the Klipsch I was blown away, but after doing some comparison realized it was just the high end. I put some time into picking out speakers, definitely not as much as I could have, and am happy that I did. Ended up with a sound my wife and I really like-- she was a little annoyed at how many trips we took to Best Buy and how often I insisted the sales people let me hook up my iPod (btw, in the Magnolia room they are totally cool with this and even encourage it). Worth the investment to avoid having speakers that annoy you to listen to.