I haven't switched yet and won't for a while. I've learned with other "upgrades" to new versions that while the new version might work just fine, if you have older websites or programs that you use they may or may not work with the Windows. I'm planning to just wait until all the bugs are out of Windows 10 and the other programs I use have caught up with it before I upgrade. Hmmmm . . . that reminds me. I wonder if my wireless mouse will be compatible with Windows 10? I've had it for a couple years so there will probably be a 50/50 chance that it won't work. Darn!