I have a .61 SB and am completely at home and comfortable with it -- gives me darn good close shaves. FWIW, my favorite blade, consistently, is a Gillette 7 O'Clock yellow but I've also been fine with a GSB (don't find Astras or Personnas to be aggressive enough for this razor). I tried a 1.15 SB over the summer and never came to love it. I found it about the same in terms of "smoothness" and even efficiency, but I always had the sense it was going to bite me. It didn't, but I never got over that sense. I also preferred the WR1 blade feel over the 1.15. Finally, I found the thinner WR1 head design to be more to my liking. I considered trying other WR2 gaps, and perhaps jumping up to, say, 1.25 or 1.35, and then realized I probably wouldn't enjoy them any more. I might get a .80 WR1 next because I've read so much about how .80 or .84 can be the sweet spot for others. The nice thing about Wolfmans is that they always readily can be resold.