I have the Betty Crocker "Big Red" cookbook, a used copy from the 1970s, and a checkered Better Homes and Gardens. Both are my "go to" books in the kitchen. They're paperbacks, though, and won't lie flat. When I go to used bookstores I always check for an old hardcover one that's already "broken in". My mom has used her Betty Crocker one for decades, and when I was a kid I duct taped the cover back on for her when it fell off. She used that book to cook for a family of 10, and my mom is the best cook I know. I also have an old, used copy of Betty Crocker's cooking for 1 and 2, and the BH&G equivalent. We have a used bookstore in town that is a treasure trove for such things! I also have Fix It and Forget It slow cooker cookbook that is great for crockpot cooking. I wish we'd been allowed a Crock Pot in the college dorm!
I also have How to Cook Everything, but I don't like it as well. If I were going to be stranded on an island with no restaurants and could only take one cookbook, it would be the Betty Crocker or BH&G. I'd have to draw names from a hat to choose between the two!