The SHARP machines are recommended by BreatheEasy over other air purifiers in the market in this price range (Rs. 15,000-30,000 - as we call the starter range) for many reasons. We have tested all machines and found the SHARP’s to be better performing machines in many aspects such as high quality filter, good throughput of air, no harmful by-products, etc. We have tested most air purifiers across 15 parameters and found the SHARP’s to do better than others in this price range.