I've only had W10 Pro for 2 or 3 weeks at this point. But then again - I loved Vista! :0
To me, 8.1 was simply an upgrade of 7, but much faster (newer laptop also)
Also, I had a touchscreen, but never used it.
I dislike 10's File Explorer - the way it updates last used directories on the side. I prefer to select them and have them remain fixed.
I do not like the START menu tiles at all and will likely get rid of most of them. I use search or CMD for just about everything (to find an app for example).
Do not yet understand quite a few new W10 features; will have to look into them. There are even more new features with Win 10 Pro to look at and test.
Not impressed with on-board Windows Security at all. Two Chrome extensions that I had on my old 8.1 laptop for years and were imported to Chrome under W10 got hit with malware within 36 hours. This never happened with 6+ years of W8.1 and ESET NOD32.
Don't want to go for a 3rd time, so I deleted all Chrome extensions, reinstalled AdBlock; installed my favorite security software - ESET NOD32. Windows Defender (or whatever it is called) is now turned OFF.
Windows Firewall has been reset and remains active.
Windows 10 is beyond super fast, but it might be the new laptop and upgraded hardware.
W8.1 - 1 GB HDD; 12 GB RAM; 8th generation core i7 CPU released ~2013/2014
W10 - 1 GB SSD; 32 GB RAM; 11th generation core i7 CPU that was just released in November 2020
What extensions and what malware?
Also how did you tell it came through the extensions?