Had the R600 for three years and finally upgraded to the 700 series. The difference is real — noticeably more powerful airflow and even quieter at the same settings. Best air purifier available.
The R700 is so effective at moving air that I rarely need to run it above medium. Our 2100 sq ft main floor is well covered. The 26 lbs of carbon handles cooking smells and pet odors with no problem. Very satisfied with this as a long-term investment.
The construction on this machine is unreal. Steel body, quality components throughout. This thing will outlast any cheap plastic purifier by decades. Worth the investment easily.
The R700 performs at the top level — air quality in our 2200 sq ft open plan has measurably improved. My only note is that it's a sizeable unit, so placement needs some thought. Once positioned in the right spot it's unobtrusive. Performance is exactly what you'd expect from the top-tier Airpura model.
Researched every serious air purifier on the market for six months. The R700 is the best available. The construction, filtration, and performance are unmatched at this price point.
