There can be only one ...mayonnaise.
And, for me and mine, it's Hellmans.
I like most store brand cereals, breads and canned/frozen veggies, but when it comes to mayonnaise, nothing compares to Hellman's.
Buy it on sale. It lasts virtually forever until it's opened. then, into the fridge it goes, where it again lasts a a long, long time.