There is a seemingly endless benefit to 7 for me, but then again, some of the new features are things that I use on a daily basis. DirectAccess has made my life easier ten fold not having to reauthenticate every time my garbage connection with my phone tether craps out.
As far as keyboard shortcuts go, I like the accessability of the items pinned on the taskbar (windows key + 1 = starts first program pinned to the taskbar, left to right) The aero features make managing multiple windows quick and easy. Where I had problems using ready boost with certain thumb drives with Vista, they work with 7, and even my SD card can be used for ReadyBoost.
I like the new search bar within the start menu, it makes accessing control panel utilites a couple of keyboard strokes away, instead of having to navigate there; which makes me happier because i despise the categorized control panel.
I agree, Vista isn't a terrible operating system, but it seems that every other OS Microsoft releases is rushed, and not at the same level of quality as others (98 -> 98SE ; ME -> XP ; Vista -> 7). I personally vastly prefer 7; but again, only because of all the features that I use daily. I ran Vista myself, and still troubleshoot it on an almost daily basis; it's an alright OS, but in my opinion, at the end of the day, 7 is better.