I use both Tutanota and Protonmail and love both. Protonmail is based out of Switzerland where Tutanota is based out of Germany. Germany is part of fourteen eyes so I give the win to Proton there. Tutanota has lower prices. Tutanota has apps available in App Image and Flatpak for Linux where Proton is only in the AUR and as a .deb. Tutanota has an Android app on F-Droid where Protonmail you have to navigate their site to find a standalone apk. Both are on the Fediverse but Proton did leave for a while where Tutanota stayed and was more active. Overall both are good choices.