I asked this question on this site a while back and after a while was convinced to give these a try:
http://www.newegg.com/Product/Product.aspx?Item=N82E16836121121&Tpk=5300e
They are THX certified and I've been extremely happy with them. Actually its hard to beat a 5.1 THX system for under $150.
PS - The biggest complaint most people have about these speakers is too much bass =P








