Again, pretty subjective. If you cut your teeth on Windows, you will have to check that experience at the door and try to get used to the way Mac OS works. You will have to remind yourself that just because you did something differently in the Windows world, doesn't necessarily mean that it was "better", just different.

In short, you'll need to keep an open mind, and I think you'll be pretty happy with it - particularly if you've had enough of Windows.