I used to use the Stahly back in the days when it was available, so when I came back to DE shaving, I resurrected it and loved it. The Stahly differs from all the battery powered cartridge razors in that they only vibrate. Look closely at the Stahly head. It's designed so that the blade portion is fixed between leaf springs at either end and that allows the blade to slide very slightly from side to side. Does it work? Absolutely, but the winding spring mechanism has its issues. The Stahly is also a very mild razor so I've moved on. I find that the RazoRock Wunderbar Slant is a great substitute as it's a more aggressive razor so it shaves closer, but has a very mild cutting action so it's less irritating than every other DE razor i own.