I'm with Bud Plug. Currently there are no specific performance, feature or bug fixes in either Windows 8 or 10 that would encourage me to upgrade immediately. I'll wait for the SP1 release to come out (~4-6 months) and then decide.
Win10 is does have a few features that definitely interest me:
- DirectX 12, but apparently the feature isn't turned-on yet. DirectX 12 with appropriate video drivers promises 20%++ improved gaming performance. That's huge!
- Better OS clutter and trash management. To keep Win WIN7 at peak performance you need to wipe your drive and reload everything every 1-2 years (depending on how you use your computer). Hate that! Win10 claims to have resolved this.
- Improved PC search engine - the one in WIN7 is pretty crappy
- Improved Command Prompt interface (including use of cut/paste - yeah!!)
- Multiple virtual desktops. I run dual monitors, so I can see allot of value in this.
- Improved Start Menu
I realize there are a ton of GUI improvements, better tablet support, new browser, face/retina scan, storage analyzer, Xbox App etc. but don't really care about those at this time.