I'm looking to buy a surround sound speaker setup for my parents for Christmas, but I know almost nothing when it comes to the home theater and that stuff, so I'm wondering, what's a solid mid range speaker system for good surround sound. I'm looking for something like 2 speakers and a subwoofer, or maybe a bar under the TV too, I'm not sure. Also, they probably dont want wires everywhere, so would there be a decent way to hide them or can I get one that are like bluetooth or wireless or something? Probably <=$400 would be nice.