Some things are good out of the gate and some things are best Left Over.
I'd put chili and beef stew and my special spaghetti sauce in the latter category.
Things like flan and chocolate soufflé are best done hot. (That's what she said.)
Tonight we had left over chicken tortilla soup, augmented by fresh, roasted corn tortillas and a bottle or three of classy central coast zinfandel. If I remember correctly, the soup was quite good but, now, I think I need to take a nap.