Take a look at monoprice.com for 5.1 speakers Cnet just compared there 5.1 speakers to the Energy classic 5.1 and the only difference they could find is the name tag.
Samsung is the best brand for home theater system. In Samsung, you can buy Samsung HT-D330K 5.1 Home Theatre System with exclusive features. This Home theatre comes with a various trendy and highly developed features that attracts users. This home theatre provides you Dolby digital sound quality with a 5.1 speaker system. It has 2 speakers and 1 subwoofer, this device is also capable of producing great sound effects. This device comes with an MP3 enhancer and 8 sound modes to hear various sound types. You can use of USB connectivity and USB recording as well.