I am about to change make of wax as my supplier of many years has stopped supplying that wax. I already use Intimate 4 so I have decided to try Perron Rigot strip wax. However the 800g tins do not fit my heater. My question is looking at the information its between their Metal Wax Heater and the Digital Wax Heater. There is a difference in price (probably not allowed to quote it here). Which would I be best to go for? I don't think either has a scraper bar but I can use the transferable one on the tin as it fits. I quite like the thought of a metal one but the Digital one is very similar to the one I have been using which is fine. It says the Digital one regulates the temperature to the quantity of the wax left in the tin but it doesn't say the Metal one does this. Anyone who has experience of either I would be most grateful for input. Thank you