What are the differences in the temperature control system between the Brinsea Octogon Eco and Advance? I'm trying to decide which model to purchase - but need clarification as the website descriptions aren't as clear as I'd like them to be . I would be purchasing the turner for the Eco, unless I get the Advance which comes with it, so please, I'm only looking for a breakdown of what makes the Advance better than the Eco in terms of temp control. Thanks! Octagon 20 Eco: Control system The Octagon 20 Eco controls temperature with high accuracy using a proven proportional band electronic controller with easy tamper-proof adjustment. A flashing indicator shows that the incubation temperature is being controlled steadily and temperature is monitored with a purpose made liquid in glass thermometer. Octagon 20 Advance: Control system The specially designed control system is the heart of the Octagon 20 Advance. In normal mode it shows the incubation temperature and humidity to very high levels of accuracy. A simple menu allows the user to change the incubation settings.