Always Hellmans. It's the secret ingredient in my Broccoli casserole. You'd never know. And weird but delicious: Costco at sample time they put salsa in mayo and served with tortilla chips - so good. And Mexican corn: corn on the cob, schmeared with butter and mayo and crema.
Always Hellmans....except in my crab salad. That has to be Miracle Whip.