I use a mac, and often use Preview to highlight and mark up, but sometimes I'll use acrobat instead, if I'm sharing with people who use windows machines, since

I use a mac, and often use Preview to highlight and mark up, but sometimes I'll use acrobat instead, if I'm sharing with people who use windows machines, since then things seem to interoperate better. I don't know what's best for linux machines, since I've not used them in years. (As a professor, I need something that handles microsoft files, because that's what administrators use ... and that narrows the choice to windows or macos.)