Has anyone used any of the Zodi camp shower products. They have the 2 burner and 1 burner models. I plan to buy one but wanted to know if I should spring for the 2 burner model. I know it can have problems in higher altitudes but I plan to use it in Missouri. I will be using well water and not ice cold mountain creek water. Does anyone think that I will be fine with the 1 burner system.