Well, for the MacBook let me be the first in a long list of people who will recommend the amazing Scrivener. There are many of us who switched to a Mac mostly so we could have access to Scrivener.

It isn't perfect, but it's as close to perfect as I've seen. It is well thought out, well supported, and has a very active community of users. I won't go into detail, because you can check it out at

http://www.literatureandlatte.com/

Steve