Can't speak about either of the above units but I have a 75GPD from Buckeye Field Supply.
I ordered a "wet tested membrane" (no extra charge) and my cumulative to-date RO rejection rate is 99.3%. Tap TDS is 450-550 PPM, TDS after the RO membrane 1-3 PPM. Makes it very easy on the DI resin only having to remove 1-3 PPM.
thanks for the replys. The OCEAN REEF + 1 FIVE STAGE 75 GPD RO/DI is from the filter guys. I think I'm set on one of these two just not sure which one any more opinions out there?