This is one of best razors i have ,very efficient,not agressive and gives bbs every time without nicks or cuts.All blades work in this razor,but the sharper the better,silver blue or feather.Very smooth shave every time.With more agressive razors i have to watch more and use medium and low sharpness blades for best results.Is 34c more agressive than 33c?maybe in future someday im gonna get it.