I figured now that it has been a few days since I upgraded to Windows 8 from Windows 7, I would provide some more information about my experiences thus far.
First, one of the biggest improvements to my system is the performance. I image it would be even better if I did a fresh reformat and installation from scratch, but even just the upgrade being slapped over top of my Win7, the computer loads much faster, it shuts down fast as well.... Resource usage from the OS had dropped across the board compared to Win7, my programs such as Photoshop, Illustrator and Maya all load a hell of a lot faster than I've ever experienced before, as well as more responsive to operations within the programs.... And for the gamers out there, not only do games load faster, but with games such as Red Orchestra 2 and Skyrim, I've been able to practically double my graphics settings and maintain the same FPS as before on Win7.... Or I could leave the settings as I had before and double my FPS.... Either way, Windows 8 feels like I bought more RAM and a new Video Card for my PC....
I'm very impressed.
One downside thus far:
There seemed to be an issue with some of the "Apps" after a day or two where they used to work (weather, news, pictures, etc.) but then stopped working. You would click to start them, they would go full screen and normally you would see a timer while it loaded, but it never showed up and then you'd be right back at the start screen.
I uninstalled the affected apps (takes like two seconds) and then installed them again... They're working just fine now and hasn't had an issue since. May have had something to do with my wife removing them from her side of the computer or something... Just a minor issue overall and was resolved quickly since you can select multiple apps and install all at once.
My wife was a bit frustrated with it at the start, mostly because it was different, but has figured it all out in the last day or two and said it has grown on her.
I think that's Win8's main hurdle... People being hesitant in giving it a chance simply because it appears to be different from previous Windows, which it is, yet isn't.
Others are put off because it gives the impression that it has been dumbed down and won't do half the thing their WinXP / Vista or 7 can do...which isn't the case at all based on my above experiences with my programs... In fact I'd say it does more in regards to performance improvements and stability.
I learned from my past experiences from going to Win95 from 3.11 and thinking the same way... But once you get past that first impression hurdle of the user interface changing from what you'reused to, it's truly an improvement, at least in my experiences.
Oh and in the new OS, you can better customize both the mouse and keyboard.... But I will get into that later.
Best money I spent in years.