For me, it's not a preference thing. I am just collecting them for future use/need. It's unlikely that we'll ever need any of these, but certain mods/exploits sometimes use files from previous Windows builds.
Having Realtek audio problems myself as well on 10159. I tried three drivers including the one from WU and whenever I set it to 5.1 the driver stops working and I have to uninstall it. Only stereo works. Any ideas??
i try over 100 times check windows update for x86 couple hours nothing ...some times its like they stuck and can't see the builds this happened in build 10158 and 10159 maybe is error of microsoft only....
Having broken audio with my Audigy sound car as well. Weirdly enough, the Realtek is working. It's related to the audio rate. Experiment a bit with the rates and you'll get the sound again... hopefully!