If you are going to buy a water purifier, then go for Rigo Elite, the good thing I have, is the mineral cartridge, it increase the ph value of water, normal ph is 7, it make it 8 or 9. This is the main reason I have bought this purifier. I didn’t go for branded purifier which is known to everyone, but this product is reliable and good.
The guy from Rigo purifier told me a lot of thing, he told me that UV is not much useful, water should be in UV at least for 40second, and for this 18 inch long tube in market which does the job. UF filter is important, it removes the smell of raw water, if there is any.
RO membrane should be good, this purifier has 75 GPD membrane which is very effective and can work for 1000 TDS. Go for Rigo Elite. 9900017122, call him, he is a good guy and will explain everything related to product.
You can refer my name too. :) However, I do not have any relationship with Rigo. :)