Windows 7. My older brother will tell me how great it is compared to the others. I had it on my old laptop and I just loved it.
I now have XP and I just think 7 is slightly better.
I tried Window 8, I just didn't like it. I got lost in it easily and it seemed a bit too fancy for me. I bet others had a better experience with it though.
It's a toss up between Windows 7 and Windows 8. I like Windows 7 simpler design, and availability is nice. Windows 8 may be "different", it's really not that bad. It's very fast, it's unique, and if you're using it on a tablet, it's perfect. Once you understand Windows 8, you won't hate it. I guarantee it.
Having a Windows Phone 8 I'm a bit biased but even though I have Vista 8 is the way to go, live tiles are great really looking forward to it whenever I upgrade.
I love my Windows 7
I had looked all over the internet to find a computer that already had Windows 7 on it and I found this one
I do not like Windows 8