Avoiding the upgrade. Tell us how that's working for you.
Surprisingly my problems are not really with windows, they're with apple. My main computer is windows is running on the mac laptop, but its sortof at the mercy of apple as to weather it wants to boot or not, and apple decided that for my old crusty hardware they weren't going to support new windows 10 (but I didn't really realize this before I upgraded it). But I got around that and things are halfway back to normal.
The other laptop is windows only and I upgraded that to 10 without any problems. its closer to windows 7 than to 8, and I don't really have anything to complain about with it.