On the other hand, you can't trust expert reviews either. The experts spend too little time with each product to form an actual opinion. They often form their opinions based on some very shallow factors. A canonical example of this is mobile phone reviews by sites like Engadget or Gizmodo. They review so many phones that they can spend only a few days with each.
Edit: one of the worst things for this is reviews of hard drives. While there certainly are hard numbers to go off, there are also lots of opinions: "Well I've owned 6 Seagate drives over the past 4 years, and they all ended up dead. Seagate products are crap!" That does not mean that all Seagate drives are crap, maybe just laptop ones. Or maybe your controller is bad and you keep attaching good drives to it. Or maybe you keep sticking these drives into a case with poor ventilation. On top of that your sample size is too small.