I decided to give this saddle a try after a great deal of research. I chose the white with red wings, as it perfectly matches my 2013 Specialized Roubaix SL4 Expert (gloss black/gloss red/white bar tape). I'm 62 years old, 5' 10", 170 lbs. and ride approximately 150 miles per week at an average speed of around 18 mph and on a good day 19 mph. In short, I'm a very average "Joe Bag of Doughnuts" cyclist. I've used the Specialized Toupe Expert Gel (143mm/titanium rails) saddle for the last year and a half and am a big fan of this saddle. I simply wanted to try something different and liked the reviews I had read on the Fi'zi:k Antares K:ium saddle. My initial impression when I took the saddle out of the box was that it appeared to be quite a bit firmer with less gel than my Specialized Toupe Expert Gel saddle. The materials used in the construction of this saddle, along with the quality of workmanship, are outstanding. The Antares felt lighter than my Toupe (which it is), however the rather long nose with no cutout was cause for concern. I installed the Fi'zi:k Antares K:ium in the exact position as my Specialized Toupe (height/fore/aft) and headed out for a 52 mile ride. Any and all concerns were put to rest in short order. This saddle fits my sit bones perfectly and the lack of a cutout turned out to be a non-issue. Just a few miles into the ride, it was as if I'd been on this saddle for a thousand miles. I have nothing but good things to say about the Fi'zi:k Antares K:ium saddle and would highly recommend it. Good luck and safe cycling to all!