Can straight ever get sharp enough to the point to compete with Double Edge blades for sharpness and smooth "no pulling", like those from Personna Med Prep or some of the Russian blades? I have a shavette holder and have tried 1/2 of a DE blade in there and there is no doubt that it simpy blows away anything I've shaved with in the realm of straights, including such razors I have as Revisor, Wacker, Wade & Butcher, Dovo....