Ok, so here's the deal:

I am a casual listener of music and I also play some games. I know that 5.1 is better for gaming and 2.1 is better for music but I don't think I will be able to tell the difference.

For the surround sound on the Z-5500, I don't have a surround sound set-up in my room. Is it difficult and expensive to install? Or what is the easiest way to get surround sound. If it is very difficult to get the surround sound, I think I will go with the 2300 unless you guys suggest anything else.

Thanks a lot.