Looking to upgrade my surround sound for my 60" Sony HDTV! Currently have and Onkyo HT-R500 reciever and the surround sound and bass module from Onkyo. Thought about buying from Bose, but after reading all the great reviews on Aperion speakers, I'm leaning towards them. I won't be able to buy all the speakers at once due to budget constraints, so what would you recommend first? Room size is 14x17 and I listen to music 50% of the time as well.