50-50 is the best I can offer. Many frustrations from older OS's have not been addressed and many new frustrations have been added that didn't even exist in (YUCK) Vista. Windows Explorer is just getting more mixed up and disorganized with each new edition since Windows 98. Libraries was supposed to fix the screwed up Vista Windows Explorer, but only added to the disorganization. (Thankfully, Libraries can be disabled.)
What is it with the Microsoft developers' vocabularies? Once upon a time, we had Internet Explorer and Program Manager. Program Manager was -- guess what? -- that was where you managed your programs. That apparently was too simple and too appropriate a name, so they renamed it Windows Explorer so we could all keep it confused with Internet Explorer. Now, with Windows 7 they have come up with a nice unique naming farce called Windows Explorer FAVORITES. Now don't confuse this with Internet Explorer Favorites, which was confusing to begin with, because everybody else called them "Bookmarks". I will not even discuss the joke called "search". It often will not find documents that Windows itself decided where to hide. The ability to disable all multi-user functions would greatly benefit millions of users worldwide who are the sole users of their computers.
Well, these are just a sampling of reasons that while Vista rates a solid "F" as an operating system and XP gets a "C", Windows 7 certainly rates no better than a "C+". Windows 7 gets the "+" because it is the most stable system recently; second only to the rock solid Windows 2000 in stability.
That's my story, and I'm stickin' to it!