I’ve used Windows 10 for all of two hours total so far, on a single machine (a Bootcamped MacBook), so obviously I feel confident giving an overall review at this point.
I’m only being half-facetious, because it’s Windows, and you probably already love it or hate it or tolerate it at this point, and Windows 10 isn’t likely to change your mind all that much. Personally, I never had much issue with Windows 7 – it was just starting to feel long in the tooth. My experience with Windows 8 was pretty limited, suffice it to say, I never felt a need to install on my laptop or desktop, because Windows 7 was Fine™.
Windows 10 is basically Windows 7 + a (great) new coat of paint and polish + the best ideas from Windows 8 + a native package management tool for us nerds (finally!) + the Mission Control view from OS X + a fun virtual assistant.
Overall, I’m digging it so far. Honestly, if I wasn’t somewhat dependent on Apple’s services like Continuity and iMessage, I would seriously consider running Windows 10 full-time, even if it was just for the novelty of using something new. If Windows 10 represents Microsoft’s direction for the next 5-10 years, I’m actually pretty excited to see where things go.
Score: Fine/10, would install again.