I think a 8ohm speaker setup is enough for your living room. The placement is important, never forget that.
Would a speaker upgrade work?
We have a Samsung receiver/dvd player in the livingroom. The speakers it came with are junk of course. I was thinking of getting a cheap set of speakers to try an upgrade the sound. I've seen some Polk and Energy sets that would be in my price range. The only problem is the speakers that came with it are 3 ohms. Most of the ones i've seen that I would buy are 8 ohms. I'm thinking that 8 ohm speakers would be an easier load on the receiver. I don't think it would cause any harm. What do you guys think?