Hi Richard,How do you find them both? Do you feel they hinder your job in anyway because of the smaller tank capacity etc (think that's what I read online) or generally big enough and good enough for what you want. Suppose you would not have bought it if that issue ever crossed your mind. To me they both look good units I suppose the Alltec having the inbuilt heater facility might be slightly the better option.Hi SimonI mainly do carpet and upholstery cleaning in static caravans now so tank capacity is not a problem for me the new Airflex Miniflex holds 30 litres and the Express holds just over 20 litres,. The Alltec Express is a custom built one from Alltec running a 1800 watt electro motor and a in tank heater and the Miniflex i have a external heater. I do have a Youtube review on the Airflex Miniflex ( RB CLEANING Skegness)Or have a look at the Prochem Galaxy ax500 comes with a proper wand..Richard