Mega offers e2ee and good prices. Collaboration does not update correctly on mobile (android and ios). Besides that, works well.
Koofr is also very good with a full e2ee option for the paranoid. You can also pay with Monero which is important. Any service that is selling privacy but does not offer a private method of payment is half-assed. Mega only takes Btc and calls all other crypto “shitcoins.” Draw your own conclusions.