the ht600's are these
. They are a home theater setup made by onkyo. These are their cheapest version and you can get them for about $250 shipped if you shop around. The sub isn't powered on this system but since my parents room is right under my I couldn't get a big sub because it would keep my parents up all night. The ht700's do have a powered sub and are a little higher quality from what I've heard but they are $100 more. I connect them to my computer through my optical port and it works great. They are extremely loud if I need them to be and very clear at a normal volume. They also have a full reciever so if you decide to get better main front spreakers or something you don't have to get a whole new system, just replace those speakers. I was also thinking of the future..I hope to keep these atleast 5 years and use them in college for computer and tv so then the reciever will be able to take both of those inputs eliminating the need for two sets of speakers.