There was a thread here several months back started by someone grappling with the same question. He/she made the switch but then switched back because, in the final analysis, he/she was more used to Windows. The best OS for most people is the one they know, since their mind expects the computer to work the way that OS does.

This wouldn't apply in your case because you already have some Macintosh experience and basically like it. Starting from there, I wouldn't expect any problems. My experience using a Mac in a number of business environments parallels that of previous posters: no trouble. I spent four years in a multi-platform company where we exchanged all sorts of documents, including some industrial-strength FileMaker Pro databases, routinely. And I regularly see people who are not familiar with Macs amazed at how easy it is to do things that require three trips around the mulberry bush in a Windows-based system.

One funny story, which I'll take advantage of having the floor to bore readers with:

I was at Compaq HQ in Houston (before HP bought them) for a presentation. We hooked up my PowerBook to the projector installed in the conference room. Nothing happened. Not a photon out of the thing.

There were about 20 people in the room. About 15 of us had solid technical backgrounds. We spent at least five minutes trying everything we could think of. (Yes, we checked the power cord.) I endured a certain amount of "if you had used a Compaq, this wouldn't have happened," but since I had used that PB with over a dozen different projectors by then I was fairly sure that wasn't the problem.

We finally called tech support. Someone came over in less than a minute. He walked to the front of the room, to a switch clearly labeled "PROJECTOR." He moved it from a direction clearly labeled "OFF" to a direction clearly labeled "ON." As my Mac desktop emerged on the screen in full color, he turned to us, smiled, and asked in the nicest possible voice "Anything else I can do for you folks?"

I doubt you'll have any worse problems with your Mac than that.