Why re-post what I said?:/
By the way, about Windows 10, the telemetry isn't keylogging or anything like that, as that's outright illegal in most countries and especially for a big well-established company a court case like this, even if they were to be proven innocent, would be horrible PR, effectively ruining bringing their stock value WAY down, possibly bankrupting them. What Windows 10 telemetry involves exactly, it's basically usage data mostly, not keylogging. They collect list of installed programs, most used programs, overview of cached data, which programs you've chosen as default for each application (eg: browser, opening videos/music/images, etc.), part of web history/bookmarks (if visited too often with Edge), all Cortana commands, percentage of time system is active/idle, how long the computer is being used each day, what hardware you are using (including peripherals if they can be recognized by brand/model exactly, eg: "Logitec gamepad"), validation services to see if it's an official copy of Windows 10, system settings and so on. It's a LOT of data collected on the background at all times, which is why leaving all telemetry active is just a huge waste of resources, as it can often cause slowdowns, be it on processing power (RAM/CPU usage) or network bandwidth if you have a slower connection making it even slower.
However, once disabled, Windows 10 is a decent-to-good OS, especially if you are using very new hardware, as 7 unfortunately doesn't have the best compatibility with the newest drivers. What I was trying to say in my original post was that if you don't have 10 already, you shouldn't update as you probably have older hardware, so 7 being lighter as an OS will work best on your computer regardless of how you configure each of the two, even if it came out as if I was just bashing Windows 10. Another thing for Windows 10 is that once you disable telemetry and switch to purely using Aero instead of Metro (which by the way is NOT better and as for those "studies" the ones on Aero proved it was superior back then), then disable Cortana as well so it doesn't hog resources for something you MIGHT use very rarely, then patch out the forced updates and make them manual, you got a VERY solid and relatively stable OS that's great for new hardware. I say relatively because it actually lacks a great deal of once very common .dll/.ocx/general ActiveX files and unlike on 7, if a program needs one and doesn't find it it will crash with no error quite often when trying to use older programs. Finally, once you start using 10, forget about 16bit apps, XP Mode on 10 is a PAIN to set up and it can potentially cause major corruptions to your installation, meaning you HAVE to use VMWare or similar...