Windows 7 is good for legacy hardwares, prefer ko talaga windows 7 dahil mas maganda drivers para sa laptop ko dun
but then again, Microsoft is not supporting it anymore at windows 8.1 na rin ang requirements ng ibang mga program. Windows 10 just sucks on legacy computers or mga new hardware na sobrang bagal ng hdd but oh well dami ng software sa windows 10 and the windows update has been better at least.
so tl;dr
Windows 7 good for legacy laptops or has a very slow hdd drive.
Windows 10 Good for modern PCs/laptops and has a lot of features.