I'm less keen on Dropbox after the recent price hike, but one thing that keeps me with it is its ability to store data without it necessarily being on your Mac - the "selective sync" feature. The data is accessed by other methods, like DEVONthink or apps that can mount off-disk folders in the Finder (e.g., Mountain Duck).
I'd switch to iCloud if it has this feature somehow - but it doesn't, does it? There's no way to store data in iCloud without it taking up disk space in one way or another?
I'd switch to iCloud if it has this feature somehow - but it doesn't, does it? There's no way to store data in iCloud without it taking up disk space in one way or another?