Okay, after some stumbling around in the dark, I managed to get Firefox 29.0.1 (Australis) looking (almost*) like my slick version 28 (Aurora) config (see above). I used an old favourite Add-On called Compact Menu 2 which sticks a menu button back where it should be, i.e. on the Tool Bar, and removes the need for the horrendously ugly AppButton. The biggest help, though, was from the Classic Theme Restorer Add-On which lets you un-Chrome things back to normal.
*Whoops, just realised that my tabs are in the wrong place. MOZILLAAArghhh!!!