Unless you are fighting a strong current in shallow water swimming up a river with your monofin (me, yesterday!)
I used many different masks, but the current Technisub Mikromask is probably the best I ever had. Being so low volume and close to the eyes, having hence only little reserve for compressibility, it is exremely important keeping the strap quite loose, so that the mask keeps on your face only very lightly when on surface. It is a very common error of many divers who fasten the strap quite tightly to prevent leaking. In fact you need to do the exact opposite, and at the Mikromask it becomes quickly more apparent than at other masks.