Missed this until just now. I didn't do extensive research on mine, I just looked at what the local well service company supports, because they come and swap out the consumables for a pretty reasonable fee (which keeps me from forgetting each year...).
The main criteria for me was having a 3/8" line from the tank to the spout, so that water comes out quickly.
I did supplement the stock 4 gallon tank with a 14 gallon tank (which barely fit under my sink). That allows the water to run for about 7 minutes, which seems to be plenty for both heavy use and to supply the ice machine.
So far I've had good luck with APEC brand RO stuff from Amazon. The original RO equipment is Millenium brand from Hellenbrand.
I use an inline remineralizer for the water to the ice machine. That is apparently helpful to preserve the pump. I also use a carbon filter for taste.
Thank you so much! I appreciate the kind reply and will be researching APEC and Millennium. I really didn’t know where to start, so I really appreciate it!
Also, what to do about replacing mineral content?
Thanks in advance.