Ozmosis water filters?

[nzwasp]

Does anyone have any experience with these.

If I get a unit that looks something like this costco one

http://www.costco.ca/.product.10319005.html?cm_sp=RichRelevance-_-itempageVerticalRight-_-CategorySiloedViewCP&cm_vc=itempageVerticalRight|CategorySiloedViewCP

Does that mean I have to change out my sinks or can the installer just drill a hole through my granite counter top?

Anyone have recommendations for ozmosis systems - currently for water filters we use two of those britta ones and then just replace the filters several times a year but if the yearly upkeep of a ozmosis filtering system is less than it would be for britta then I would go with that.

[phreezee]

Simple setup but you will probably need to cut a section of drain and fit a piece for the waste water. Simple with a reciprocating saw and abs/pvc glue.
You need a masonry drill bit large enough for the facet.

Other than that, clamp on the needle valve for the source water and you got a working system. I've gone through 3 over the past 10 years.