Nice one mate. I just ordered a twin filter from those guys for drinking water for the kitchen, they look like they're good quality. Still on the fence about getting the RO system, mainly due to the fact that they say you need to run it at least once a week to keep the membrane clean but I would...
Do you have a photo of your manifold? I was thinking of getting an RO system. What I would like to do is put it under the kitchen sink and use the first two stages normally and then just reconnect the RO membrane when I am making beer.