the vintage mercedes toaster, model number T456 would be the most effective, durable, and over engineered, to change the heating impliments it would take 4 hours and 7 special tools only still avilable in third world countrys. the next generation the T457 would be slightly more powerful but quality would have taken a sharp decline. sadly model T302 resembled nothing a mercedes toaster ever was, it toasted differently, it looked different, and it had inferior quality, company executives were quoted saying.. "what happened???? lexus toaster incorporated .. thats what happened"