Question:
Has anyone ever purchased a reverse osmosis system from this company (www.h2ro.com) ? They have an interesting website, and claim that their systems are superior to most - so I am looking for any users who can give any info, good or bad...

Answer: They're using high quality components although I do not agree with installing on water with/of unknown microbiological content or the time frame for cartridge replacements.

About the only comparison is they are all called RO's, otherwise there is no comparison IMO. I sell the same cartridges and I've not found better, but they should be replaced on a 6 to 12 month basis. Especially on residential well water