I started using a MacBook Pro a few months ago and haven’t had many issues with the transition. I’m finally getting used to the differences in how the operating system works and all the differences that you find out about as you go. Overall, it has been a good experience with the exception of all of the problems I have had with fonts. I have a font manager installed with way too many fonts and so I’ve been trying to pare them down to something more usable, but keep running into issues.
The first issue I had was with the Arial font. It was installed, but not active (or something like that) and so sites using the Arial font ended up showing a serif font instead. As a web developer, it was a little frustrating, but wasn’t a great hindrance to browsing or productivity, however. After playing with the font manager for a while, I finally got Arial to show up.