The main thing with surround sound is the wiring. If you can't think of a way to conceal them you have a lot of speaker cables.
If I was going surround sound again I'd probably be looking at Sonons but obviously that's not ideal for music.
I do have a full surround sound setup that I need to get rid of (2x Wharfeldale 9.4, 2x Wharfedale 9.0, Wharfedale 9 centre and DENON AVRX2300W receiver) in part because I just can't fit it neatly in my new place. I do miss not having it though when I'm watching films.