I would like to manage plugins in the lowest-touch way possible, and ideally one that's easy to migrate to other machines.

I like the idea of the internal plugin manager, but that generally means that I need to manually all the git repos on all machines. It also makes tracking plugins that I'm testing a bit annoying.

The alternative seems to be vundle or vim-plug, which do the git management, but don't use the internal plugin system.

Are there other options? What's the easiest these days?