Build your own.....you have control over the sound not available in anything mentioned above.....serious high end sound for pennies.....obviously, not a small speaker (16 inches wide) and could be very tall if you do a long line source. And also not self contained.....amps and xover are separate...............but sound? Goosebump city! And for very, very little money.
http://tweakaudio.com/EVS-2/DIY_Bi-amped_super_speaker.html