I have three devices designed for Windows 8 and I have upgraded a 4th.
I will admit to a day or two of "Who moved my cheese and why?" but it didn't take long for me to realize that the move was a good one, plus it really wasn't moved but optimized. For example, I still get to work the regular way.
Hit the Windows Key and Type Word.
Almost all of my Legacy programs work on Windows 8 and Windows 8 Pro. I do have a Surface RT, but I rarely miss the apps on it. It's definitely a tablet. I've been thinking of buying a Surface Pro, but haven't done it yet.
So go for it, you'll like it.