Okay, some thoughts on Windows 10 now that I've been using it a bit...
Pros:
- Desktop to tablet mode: A very smooth transition.  After being used to Windows 8, it was a bit confusing, but now I see the functionality of it more.
- Speaking of the desktop, using it with a mouse and keyboard is much nicer than it used to be with 8.  It feels very intuitive.  Nice that apps now run within the desktop while in desktop mode.
- Cortana: I find I use her the most when I can't find my app and/or am being extremely lazy.
- Battery: Now you can see how long it will take for your battery to fully charge, how your battery is being used, and more battery information and settings.
- Mail: Much nicer.  Much faster.  Like it much better.
- Multiple desktops: Possibly my favorite new feature.  Much more easy to stay organized while working
- Action Center: Much improved. Good place to find notifications for all the apps instead of them disappearing into cyberspace
- Microsoft is listening to us!  There is an entire area for feedback. You can make suggestions, and they are publically posted. Then, people can upvote the ones they like.  I haven't written any suggestions, but have done a lot of upvoting.
Cons:
- Battery life on my tablet has not been as good.  Reduced memory as well.
- Why did they move the personalization settings from Control Panel to the new settings menu?  Freakin'.  Annoying. And more confusing than before.
- Display driver has now failed twice. Probably will have to reinstall.
- Netflix tends to freeze
- Snapping screens is terrible now.  Was much better in Windows 8.
- Sorry Microsoft.  After IE, I don't trust Edge.  Staying stuck in my ways and using Chrome.
- Some are reporting no sound after upgrading.
So should you upgrade?
There are definitely still bugs in Windows 10, but overall, it's a solid operating system. If you have Windows 8 and hate it with a passion, go ahead and upgrade now.  If you have Windows 7 or don't particularly dislike Windows 8, you might want to wait until there are a few more updates.  Like I said, some are reporting no sound, and there are definitely driver issues for some (like the display driver on mine)
I used Windows 8 on my laptop after getting Windows 10.  That was when I realized what an improvement Windows 10 is