BWI RO/DI group buy

[cwatkins]

How much is the deposit?

Also, what kind of difference would I see in the water between the various models. I'm looking at the 4 stage, and we have pretty good water here in Vancouver.

What is a 4 stage going to give me? Compared to say the water store where we go to get jugs (they have huge tanks and appear to be a large scale RO/DI type of thing).

Thanks.