Another first thing I do after Windows 10 install is killing the task scheduler. Among other things, it contains a broken task related to Xbox support, which activates on idle and takes up like 50% of the CPU. I think that people think that the machine is running a defrag or some other optimization.
If Linux got its UI business together, I would flee from the Windows immediately. I've been 10 years on Mac but we all know where that's going. Now with WebKit and Node.js so advanced, I'm not sure what's stopping us from creating a really nice Linux UI ecosystem. Perhaps the state of Linux laptop drivers, mainly the touchpad ones.