C.C.
Once you go Mac, you'll never go back. We have a MacBook Pro, a MacBook Air, and a 27" iMac, and they can all run Windows (faster than a PC can run Windows, I will add ;).
Just go to the Apple store and buy whichever one you want - personally, I love my iMac, but my girls love their laptops - just depends upon how you want to use it. Then, get Parallels and Windows, and you'll be able to run Windows if you really need to. Here's the thing, though, most programs that you'll end up using for work are either available on Mac (Excel, Powerpoint, Word, etc) or are cloud-based (so you can run them on Chrome, Firefox, etc). So the chances you'll need Windows are actually pretty slim anyway.