If you're looking at this for personal use, I might still have a problem recommending a Mac for you. Of course, I can only go by the tone of what is on the written page here, so makes it difficult in this type of setting.
From what I'm reading above, you have pretty much everything set up in Windows exactly the way you want. You'll have to realize that OS X is not Windows. If so, you may find as I did, that OS X really is a great OS. It definitely is my OS of choice at this time for most of my personal computing.
You'll definitely save all of that time you've been spending with the need to run an anti-virus, a spyware app, your defragger, going in and blocking services you don't need running, stopping all those apps that think they need to load at startup on a windows machine, etc. There still is regular maintenance to do. I was big on tweaking my personal computers and find that OS X saves me a good 3-4 hours of maintenance time a week. It was a hard habit to break with my first Mac, which was also my first notebook.
If you're tired of the "same old" and ready for a change, think you'll like it. Possibly, a lot.
As to whether it is "better" or not, well, I have my own views on that. You might like this
post I made just 3 weeks into my first Mac.
You have found a forum with a whole lot of helpful folks, with a great many that use Windows and OS X on a daily basis. If you come in with a question of "I want to do 'xyz', how do I do it?" instead of "I use to do 'xyz" this way in Windows, why can't I do it that way in OS X?", you'll find a whole heaping of good help.