I'm a huge fan of Vim buffers. I try to have my buffer list roughly mirror the files I am currently holding in my brain.
The BufExplorer Vim plugin helps, and is included in the Hashrocket Dotmatrix. Today I learned to use the command \bs, which opens a colorful buffer list that you can navigate with Vim directions.
https://github.com/jlanzarotta/bufexplorer