I’ll weigh in quickly. I’ve used “them all”, so to speak. For many different purposes. I hate to weigh in on the side of the evil Empire, but Office 365 is great, and at around $99/yr it’s hard to beat the price. It’s just more polished than any of the alternatives, and an important point for me is that everything is integrated. 1tb storage, great apps. I use it for everything from music (I play professionally as well as teach, create docs w/ office), to use w/ real estate/rentals to legal work to trading cryptos. Bit of this, bit of that basically, anything that pays the bills. The main selling point for me is the ease of integration.
–> I’ll add as sidenote that my dream is that Eve’s next project is a Surface Phone - Surface Phone killer, that is - please! Again, for the integration, syncing and ease of use from platform to platform.
Antivirus: maybe someone mentioned Sophos and I missed it. Sophos has fantastic av for personal use. Currently free. They offer much more than personal, but here is link to home version: https://home.sophos.com