I can code in three languages/platforms: Java (its been long time), ruby on rails (beginner) and Drupal/PHP (beginner). This app is a pet project I really want to complete and involves some good business logic as well as need to have nice front end.
I really cannot decide which platform to chose. I have done some work in RoR and some in Drupal and I have not been able to make up my mind about what is the way to go.