I’ve upgraded about 30 computers from both Windows 7 and Windows 8 to Windows 10. I’ve had two issues one older laptop running windows 7 didn’t have video drivers for windows 10 or windows 8 for that matter the second issue was someone who I had suggested upgrade and then ran into issues with a specific piece of software that she used. In both cases the roll back feature worked flawlessly. I highly recommend EVERYONE running windows 8 upgrade to Windows 10, if youre using Windows 7 your computer is probably more than 3-4 years old and you might just want to hang on and save your pennies for a newer one. If your computer is over 5 years old running windows 7 or not I would just say DON’T you really need to consider new hardware.
Overall the experience with Windows 10 has been excellent and I do recommend it to anyone that wants to give it a try.