I have a sony htiab system setup in my living room right now and I want to upgrade. I already have all the speakers that I want. I have sony bookshelf speakers for the front and center speakers with the stock htiab rears and sub. I want to upgrade my reciever to a higher quality one with hdmi audio inputs and hdmi upconversion. I am going for a lower price model but I still want those features. I was looking at sony again because I like how they are controlled but then I saw the harmon Kardon and they really caught my eye. What does ot think of the Harmon Kardon ARV-247? also what is a good inexpensive subwoofer to use? my sony system comes with an amp built into it for the sub but every other one requires a powered sub.