Which one looks nicer?

key down case vs if.coffee

  keyDown: (event) ->
    switch event.keyCode
      # Backspace
      when  8
        if @el.val() is ''
          token = @tokens.pop()
          token.remove()
      # Enter
      when 13 then Houston.nextStep() if @el.autocomplete 'option', 'disabled'
      # @
      when 50 @enableAutocomplete if event.shiftKey is true
      else setTimeout @check, 100 unless event.keyCode in @ignoredKeys
      
  keyDown: (event) ->
    # Backspace
    if @el.val() is '' and event.keyCode is 8
      if @tokens.length > 0
        token = @tokens.pop()
        token.remove()
    else if @el.autocomplete('option','disabled')
      # Onto the next step if enter has been pressed
      Houston.nextStep() if event.keyCode is 13
      # Enable autocomplete if the user enters a '@' symbol
      @enableAutocomplete() if event.keyCode is 50 and event.shiftKey is true
    else
      # Set timeout before checking this string. If we check too quickly the value will not be grabbed correctly.
        setTimeout @check, 100 unless event.keyCode in @ignoredKeys