Why Mega S4? As mega user myself i would say because it’s E2EE storage company with integration with S3, and the S3 is part of your main Pro personal plan bandwidth and not a separate plan to pay for like others who sell S3 seperated! Mega isn’t charging for S3 as a feature, and the service cares about privacy, the same personal data plan will give you the ability to use S3 for personal projects or even business (Basic plan gives ~48TB). Personally, I use it with my servers backups including the backup of my n8n instances but i also use it for storage with n8n client node before, until found the n8n node misses a lot of operations, so I decided on weekend to vibecode a new one based on the latest S3 SDK with configuration for the Mega API limitations.
Feel free to test & use it:
https://www.npmjs.com/package/@nskha/n8n-nodes-mega