i bought these speakers for my friends computer that i built.
they sound pretty good for computer speakers. not a very big sweet spot, and still a little difficult to set up the rear speakers, but the sub is pretty nice.
and the features are nice. definately worth 300 bucks, which is what it cost.
2000 cubic feet is a big room, it will work ok for ht but.. its not going to fill it like a real system. but if you only have a budget of 300 bucks then thats probobly one of the best options.