Well I'm finally getting tired of carrying in distilled water and my wife is getting tired of having to buy drinking water so we are getting a RO/DI unit. I've been reading all the posts on them and going to the different websites researching them. My question is who is using a booster pump with theirs and what kind of booster pump is it? I'm looking at a 100gpd unit and I'm pretty sure my 100 yr old well and pump (ok its really only 20 yrs old) doesn't give out alot of psi (been reading between 30 and 45 psi) so I'm pretty sure I'm going to need one and am trying to get ideas on the pumps now.