It's fast.
Otherwise, beware of Cortana. It records your voice, it logs your keystrokes, and it tracks your browsing history. It uses all this data to build a profile which is sold to advertisers. Worst of all, it does reinstall itself with every (mandatory, forced) update regularly made to Windows 10.
Making windows 10 free wasn't generous, it was just a good business decision, and poor ethical choice for them. But it's a multi-billion dollar corporation whose only goal is to make more money, so you you should probably expect ethics to be put in the back seat.