If anyone happened to come up to me asking for suggestions in purchasing electrical appliances, I would always ask them to do some research on the reviews online. I believe they are the most trustable and reliable source where we can get information from.
Most importantly, they are free of charge and are written by experienced users, not by companies that may bias the information. I had my own experience when buying my first dehumidifier. Thankfully for the dehumidifier reviews, I made the right choice. It was already five years; my machine is still serving our family well.
I am so grateful that I did not depend solely on the information given by salesperson even though I had no idea how to choose one. Ever since I discovered the benefits of reviews, no matter what I plan to buy, I always make sure that I will do some thorough research and survey before making up my mind. That's the way of a smart consumer.