The most important factors that I evaluate when I review a product are: - Functionality and Quality: It is important that when you buy something you can perceive a long-term use, that is to say, that it will serve and be of good quality. Clearly this varies depending on what type of product it is. - Design: It must be adequate to its functionality and be built to an effective size in order to fit the space where it will be used and/or stored. - Purpose: The product must offer a solution to the market which can be profitable and long-lasting. - Price and Differentiation: The market is full of competitors and for a product to have an important participation it must have an original value that is congruent with its price.