PHP or ROR.
regularfry: I'm a PHP fugitive, so take this with a pinch of salt. 3 years ago I thought Rails was worth the pain of working with Ruby on Windows compared to the problems I was facing keeping myself enthusiastic in PHP. Now you've got the option of developing Rails sites in JRuby, that pain is much, much reduced. Honestly, it's worth a shot if you haven't tried it yet.