Hi Vlad,
In some ways I have to agree despite the fact that I have opted for the mounted heat exchanger.
Where the heat exchanger wins I think is if you have to co-ordinate showers for more than one and if you want to be able to have it straight away without having to wait until camp is set up and you have a stove on or even a pot on the fire.
The cheap shower units have a lot going for them though - the shureflow pump I installed pumps way too much water unless you have an unlimited supply on hand.
I am going to be either using the el-cheapo shower unit or I am going to replace the bigger pressure pump with a lower flow unit and mount that instead.
Cheers,
Cameron
