I like Windows 7 more... its the best Windows version I have ever used.
Having said that, Windows 10 is not totally horrible... compared to the trainwreck that was Windows 8, and the barely usable fix for that, Windows 8.1, Windows 10 is surprisingly usable.
I wished they would get rid of the whole Metro crap, and their new flat design, and just return to the old design of Windows 7. Drop the resource intensive parts like the see through design, I don't care. But the flat design really hurts my eyes, its what happens when designers get bored. They take something that isn't broken and change it for the hell of it.
But my complaints about 10 are mostly subjective, I haven't found any real bug with Windows 10 until now. Some issues at the beginning with drivers and all on my new machines, but IDK really if that is a Windows 10 issue. Most of it has been fixed in the meantime anyway.
If you have to get a new Windows at the current point in time, no point in going with Windows 7. If you have Windows 7 and are thinking about upgrading, might as well use the remaining time to upgrade for free, as long as you don't mind having to adapt to Windows 10 at the current point in time (which shouldn't be too much of a problem).
I am still not sure what is the status of free upgrades after the free upgrade period is over, if you get a legit serial or not. You are kinda at the mercy of MS here.... but that is true for any software. So IDK... maybe I am overthinking stuff in case of Windows 10.