Username or EmailPassword
Truth be told? PHP. The Ruby code looks too wordy.
Also, I have a really hard time reading Ruby because of the way the code blocks are structured. I used to be a C programmer, so I guess I'm accustomed to that style and I like the curly braces.
The only language I really like that doesn't use the C style syntax is Python. I think it is one of the most beautiful languages to look at.