As one who only uses quality Feather or Kai straights I just got both the folding and the nonfolding Feather SS straights. I had my first shave today with the folding model SS straight. All I can say is the shave was nothing less than phenomenal. Any Feather used with any Feather blade will be much sharper than a traditional straight, hence their reputation of being less forgiving. Its true, they are certainly one very sharp razor. The new SS, IMHO has it all over the other Feather...
I received my Kai folding straight today, and at first glance upon opening the box, I was most impressed. This razor just shouts quality. Its solid stainless steel. The look and feel of this razor are most impressive. I only use disposable blade straights, and for almost a year I have been using the Feather AC razors. I have both the RG, and the DX, as well as the non folding AC. These have been excellent razors, and are the ones I learned straight shaving on. I get very good shaves...