1. RubyMine looks interesting but I can't find any Haml support (only ERb?).
2. RubyMine's code completion looks great and that editor has good potential. But to be honest, its Ruby code parsing is worse than Netbeans. For instance, I really like to see highlighted all places where my variable is used. In Netbeans I can point my mouse pointer on any variable and I can see all its usage in context. Is there any plan for adding that feature to RubyMine?