You’re putting yourself in a tough position by asking for both E2EE and the ability to use from a browser. You have to trust the web app each time you open the page, and hope that they haven’t altered the deal to simply grab your data after it’s been decrypted by your password. I have no idea how likely it is that Standard Notes would do that but I’d reconsider the browser requirement specifically if E2EE is non-negotiable for you - an offline open source client program would be a much stronger position.
For my money, I use local text files and SyncThing but it’s probably not spiffy enough for many people/purposes.
I was comparing frozen diced veggies a couple of years back (in Australia) and noticed that the store-brand version was approximately 1/3 broccoli stems by volume, which certainly explained the cost difference.