Since you are talking about OneNote, I can't do what I would do otherwise. For those who don't literally require a Mac, which is way too expensive, I suggest to buy a PC and install linux/ubuntu. Since both are unix-based, they work fine. For everyone, mac is not worth it. I always recommend ubuntu to general users.

Three things I hate about windows:

Windows gets slower day by day. you have to re-install it over time. Neither mac nor linux needs* to be reinstalled over time for no reason. I hate this.
Viruses, malicious softwares, and after all, alerts!!
Windows generally takes too long to boot up and shut down (first few days after fresh installation you really can't smell that). I mean, I can't boot up immediately when I need to. It takes too long for windows to prepare it to get working even if there is absolutely nothing in startup applications. Same goes when shutting the computer down. Linux or Mac, none has this problem.

Over time, you will begin to feel these problems.

*Since you're a writer, can you help me with this? Should I use that 's' for third-person singular number when saying "neither this or that [verb]..."?