We've used it competitively for the last 4 years...That being said, when it's working, it makes life easy (we use the shower head attachment and the pump submerged in a 35 gallon tank)...My only problem with this unit, is it has died on us usually at the most inopportune time (Battery Charger quit and unit failed to ignite propane)...I have gone through 4 different units over the past 4 years...I've also tried the zodi portable hot water heater (water will not get hot enough)...The one thing that's been very good about the coleman, is the product support (I bought the first one only, and all the others have been replaced at no charge by coleman). For $120,
that unit is a steal...and even though I've had so many problems with it, I would still recommend you get it cuz there is no comparable unit out there that can perform as well as it does when its working...and besides, if it should break, coleman will replace it.