Comparisons of microwave oven ratings are available from Consumer Reports, CNET and Good Housekeeping. Each company evaluates the products on different criteria including evenness of cooking, value and ease of use.
Some consumer evaluation companies use a school-style grading system to rate appliances, while others use a scale of zero to 100. Some include prices at various stores to allow the consumer to comparison shop from a single site. Others provide detailed descriptions of the testing methods used. Certain sites are free while others charge a fee. Some give first-person narrative reviews, while others provide lists of key pros and cons.