Anhui Province to do which brand of water purifier is better?

My family is now using the Qinyuan ah, I did not understand how to choose the la, in fact, now want to buy a water purifier key or to use to rest assured that it is still to buy the best brand, I last time to go to the brand-name network china-10 above the top ten brands of water purifiers, there are the United States, Midea, Litresen LITREE, Qinyuan, Quan Lai, love EVERPURE, Benoken, Paragon, open energy and so on, I think you can first compare not in a hurry to buy it. Paragon, open energy and so on, I think you can first compare and contrast without rushing to buy oh.