Made 10 gallons of water last night. It took maybe 2 hours per 5 gallon jug. Reading zero TDS on the DI output into the container.
So far I highly, most definitely recommend the Smart Buddie! Holy smokes that is an incredible product! Again, went from low 20s to 85, maybe even 90 psi. The SB automatically turns on when you turn on the water. Automatically turns off when you turn off the water. Automatically flushes the membrane for you. The unit couldn't produce any water before, the pressure was just too low for the membrane. Now it's cranking out 5 gallons in 2 hours with a tap water temp of 56 degrees as of last night. I'm not an RO/DI expert but I think that's pretty dang good. I think my unit is rated at 100 gpd. At $130 I think the Smart Buddie is an insane value. For me, it made RO/DI production not only possible but out-freaking-standing in my house!
If you're on the fence about a booster pump, or even making your own RO/DI water, good grief do it already! Glad I kept the old RO from 2008. No leaks, no problems, and competes with probably anything made today.
Okay, done gushing about the Smart Buddie and the glory of a good RO/DI. But I've been in or around the hobby for 20 years now and I fell in love with that product in one night. I think it sets the bar for what a booster pump should be.