Its just me, I had a bad experience installing W10 on my newly built NUC machine last year.
Having bought a cheap copy of Win 8.1 solely to use the "key" for the W10 install I was convinced that it would all be fine!
first off, the update tool which creates the USB installation media "hung" part way through and at silly o'clock in the morning, I had to just shut down and go to bed, fearing it might be a fire risk ...but no, it wouldn't let me have any control so I just cut the power!
Next day the boot media as expected was no good and needed re- doing, but the worse bit was that my fairly new Medion Erazer laptop was getting messages from MS that something was wrong and various unexpected things were happening!
Had to get Medion to help sort it out which took the best part of a week!
I was going on my Hols at the weekend and could have done without the stress and worry.
On my return, having successfully created the install USB, and actually installed the blessed OS, my product key was rejected as "not recognised!!
Another week spent on the phone to and from India to MS and to TESCO HQ (they sold me the dratted Win 8.1 disks).
No one in MS London or Mumbai recognised the version of Win 8.1 which was designated "Full Version".
Upshot was that under pressure from TESCO's Chief Exec, MS granted me a new Key for Win 10 Pro which installed as you say, "like a snap".
I really don't think that my mental health could stand another similar experience!
...It would as you say "Snap"!