I have programmed in both Rascal and Racket (for university courses). I really prefer Racket. Though most of that might be because Rascal isn't really polished

I have programmed in both Rascal and Racket (for university courses). I really prefer Racket. Though most of that might be because Rascal isn't really polished for mainstream usage. Rascal doesn't have a lot of good error messages at the moment (the most common error message you might see, is CallFailed, with just the bare minimum of information where it occured). Another issue is how to run Rascal. Currently, you can only install it as an Eclipse plugin, and that seems to be the only way to run it. Edit: I see that last statement is false. There is a commandline REPL. But I do not know if it works well.