BRS 7 stage 200gpd with booster pump. I strongly suggest a 7 stage as you can never have enough filtration and the cleaner the base water the better. I love mine and it’s an absolute workhorse!What are your favorite RODI units? I'm talking your absolute favorites! I had an old vertex puratek deluxe that gave up the ghost recently. So I'd like to pick up another really good unit. My old one was 200gpd. I'm looking right now at the Icecap unit as it looks really nice. I also know Aquamaxx has revived the old vertex models, but they only have up to 100gpd, so it would be the same as the Icecap. Which ones do you guys like best? What's the Cadillac of RODI units today?