I'm 6 foot, 210 lbs and purchased the 142mm. I started riding while I nursed a shoulder injury for something to do until I could go back to crossfit. I have tried several saddles since getting a road bike. The Specialized Phenom saddle that came with the bike was way too firm for me. I tried my Fitzik Allante VS saddle from my mountain bike, but that seemed uncomfortable after 20 miles. It works on my mountain bike because I don't normally ride more than 20 miles at a time. I also tried the carbon Fitzik saddle, but don't recall the name. It was way too firm and went back after only a few rides. The second best saddle I tried was the Specialized Avatar. I kept searching, because I wanted to find a saddle that I didn't notice on rides longer than 20 miles. I didn't want to have to keep changing positions to be comfortable.
So far this has been the most comfortable saddle and doesn't make you feel like you've just been released from prison, so to speak. I will keep putting miles on this one, but feel like it's a pretty good saddle for me. I don't find myself changing positions all of the time and it's nice and smooth so if you do shift, it doesn't seem to grip your shorts like the Specialized Avatar. I probably have over 500 miles on this saddle and will update this post if something changes. I'm trying to build up to a century ride, so a lot more miles are in the forecast.