Creative Gigaworks s750
These speakers are certified by THX 7.1 which means they will be a high level of quality. There are 7 satellite speakers which are specially weighted to cut down on muffled sound. The sub-woofer can deliver some serious sound inside its well built outer coverings. In this package you also get a remote control so you can fine tune the lot from the comfort of your sofa. The speakers are generally on sale for around £300 so if you've got a decent sound card and a PC that can support them then these are for you. A little pricey but if you can afford it there well worth the money.