The only real improvement from 'upgrading' from Windows 8 to 10 for me was to get rid of their spam message imploring me to upgrade all the time... Performance has got worse, their new Photo viewer, video browser and all those other things are so clearly made for tablet users and people who break down mentally if they see more than 3 buttons on an interface, so I just set it to use the old ones anyway. The improvements are minor and don't make up for the performance slowdown I've had and Windows 10's eagerness to collect and send info about my com (which I've done what I could to deactivate).