Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
I'm not seeing anywhere near the problems you are having with DVDs. Some are damaged or scratched to the point of not being playable, but I'd say the in total about 1% of the discs I get from Netflix have problems of any kind. (I did use Blockbuster for a short time and they had a higher rate of damaged discs, but still not 10%.)
Supposedly the HD formats do have a better coating to minimize scratches. We'll see.