KitchenAid is a Whirlpool Corporation brand that is well known for its higher end appliances big and small. KitchenAid's refrigerators cost more than others, but some of the best mid-grade refrigerators available are KitchenAid. Make sure you read the reviews on the exact model you are going to purchase because there are some models that are not as highly reviewed. That said, overall, KithenAid is a well known brand with a lot going for it with solid features and quality refrigerators.
Frigidaire is an Electrolux brand that is known for its price competitive appliances. Their refrigerators are lower cost versus many competitors, but as with everything lower cost, some models have less features than the market leaders or higher end options. That said, most recommend their Frigidaire appliances and think that they work well even without the frills.
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