Do they seem like the kind of person you'd see walking through the aisles of a health food store sonus complete or working in one if you're like me). I have tested quite a lot of LCD monitors in my labs and I feel quite lucky because manufacturer's send me all their products for testing. Many of them charge a decent amount of money, but until and unless you are sure of their authenticity and of the quality of their services, why should you pay them so much? There is a bit of criticism around performance reviews in that they don't do anything for people and they restrict their creativity.