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.
Whirlpool is the name-sake brand of the Whirlpool corporation, which also markets Maytag, KitchenAid, Jenn-Air, Amana, and others. The Whirlpool brand itself is generally associated with washing machines, though the brand has expanded to many other large appliances over recent years. For refrigerators, specifically, Whirpool represent a solid mid-range offering (popular designs for a competitive price). With a wide variety of refrigerator offerings, Whirlpool may just have what you are looking for.
Whirlpool Refrigerator: 8.9/10
Price Range for Reviewed Units: