We generally advise to take the adjusted size, because the material of the shoe tends to slacken with the work which one makes him make; if you take a shoe that is too "comfortable", the foot may, after the material is released, float and no longer be held as well. If the model is a high heel model, this can be dangerous.

By cons if you often have width problems, onions, corns, you can favor a more comfortable footwear, but stay with models with small heels. If your foot is slightly floating, you can correct it by putting on pads or insoles.