I think the interface that brew provides is very simple and easy to use. The terminal output during installation is nice. Again, it's the extra little polishing

I think the interface that brew provides is very simple and easy to use. The terminal output during installation is nice. Again, it's the extra little polishing of these OS X tools that I think really draws people to them and keep using them. In regards to rbenv, the "core" part of rbenv(switching between versions of Ruby) works fine. It's the other tools like ruby-build and rbenv-install that didn't work for me. I don't mind manually compiling my rubies though.