I love using Wormhole (https://wormhole.app/ https://wormhole.app/) for this purpose. The UI and the downloads are extremely snappy, and for large files it uses

I love using Wormhole (https://wormhole.app/ https://wormhole.app/) for this purpose. The UI and the downloads are extremely snappy, and for large files it uses peer-to-peer technology to speed up downloads. Download links can also expire, which is a nice bonus. (N.b. Not associated with Wormhole or the developers; I'm just a satisfied user.)