Binos A little late in the piece, but well done getting a Mac.
With short gaps to replace or repair my PC, I've had both platforms in my office for years for software reasons (which are becoming less relevant now).
The best thing about Macs is the lack of threat from viruses and spyware, and for the newer Macs, the Unix based OS. And who wants to use a computer where you have to hit 'start' to shut down
On top of that, you get a superb physical design (the phrase 'form factor' sucks, IMO): elegance in both appearance and function.
I enjoy using my Mac - I even enjoy looking at it.
Don't worry about teething problems - the Mac will soon fit you like an old wellington boot, as they say.
You'll have many happy hours together. They're intuitive enough that you simply produce the work - you can almost forget the intermediary of the computer!