a
RO/
DI will give you very similar quality water.. (of couse
RO has wastewater)
thats a
DI only unit (one stage for + and one for - ) with a carbon prefilter.. and it doesnt have waste water issues
but.. I would investigate the cost of replacement media and life expectancy.. (the
DI resuns can be recharged but when do they get exausted?)
and the
DI only unit has double the output rate of a
RO based unit.. this could be helpfull for some people (or in emergencies)
Kent marine would likely give you alot of info on the product..
btw.. I had no clue that these things had gotten this affordable.. its been a long while since I looked.. :P