The main difference is the design. BE keeps a hidden directory where everything is referenced by hash, which means you need to take the time to set up BE and have the client installed to use it. This is based on human readable file and directory names and isn't concerned with title collisions, which means that if you're stuck you can manage your issues with ls and cat (and mkdir, I guess.)
BE is probably more powerful and mature, but this is lighter weight, has no dependencies, and I find easier to use (possibly because I wrote it.)