how about
Creative GigaWorks 5.1 S700
http://www.newegg.com/app/ViewProdu...-116-143&depa=0

Logitech Z-5500
http://www.newegg.com/app/ViewProdu...-121-120&depa=0

Logitech THX Certified Z-680
http://www.newegg.com/app/ViewProdu...-121-105&depa=0

z-5500 and z-680 which is better? if we don't concern about $$