If you want to spend around $500 for a theater in a box solution these are the best you will get: http://www.amazon.com/Onkyo-HT-S6300...9491292&sr=1-4
They are not the smallest speakers, but they should be good to fill your room. These are 7.1, but you can just make them 5.1 if you prefer and keep the other 2 speakers in the box.
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