Hardware-wise, Macs are better than PC (partially because they keep it simple, don't have too many variations on the mac theme).
To be more specific, when you get a PC, you may be getting jipped on some feature (graphics card, sound card, resolution of monitor, RAM speed, etc) and not know it until it's too late... and since there are so many variations in terms of system configs, few support people are able to give you reliable info about what your particular system can and cannot do. While I, being a nerd, know this stuff on my own, the vast majority of people don't - and are ripe for the booty treatment, hold the vasoline. When you get a Mac, since there are < 10 variations in total on what you can get in a notebook, you pretty much know that what you're getting is solid and is going to treat you right. In fact, this general rule holds true: MacBook if you don't need HD video or serious Gaming capability, MacBook PRO if you do need these things.
System Software-wise, Macs are better than PC (partially again because they keep it simple, trade off of increased stability for arguably less flexibility).
HOWEVER, Third-Party Software-wise, PC is far better (because they have the development market LOCKED down).
I personally use a MacBook with Windows XP installed via Boot Camp. I almost never use the Mac OS, actually I NEVER do. I initially thought I would use Mac OSX only, since I wanted to start keeping things "simple"... But when I realized they didn't offer Microsoft Access for Mac, I had to get outta dodge quick. If I could go back on my decision, would I have bought an HP Laptop (by far the best value in the laptop market)? Probably... but the MacBook is so sturdy and sleek.
I would guess the story is similar with Medical software and medical PDA synching, etc... PC (or Windows at least) is simply hard to do without. Sigh.