I have never stopped to write a review about a household cleaning item until now. I bought the Big Green to replace my Bissell 2x ProHeat carpet cleaner. The Big Green 10N2 blows away the ProHeat 2X, not just by a little amount but it completely destroys it. The quality of the Big Green is seriously awesome, it is built like a tank. The separate dirty water and clean water tanks are awesome and are easy to fill and dump out. The endurance on a full clean water tank is about 3x the ProHeat 2X. If you are on the fence...BUY IT! you will not regret it.