I got the Affinity RXL WSD in 154. I measure 150 so I need wide. This saddle supports my seat bones perfectly and does not flex. My first ride was two hours, and I got sore, but in the right spots, not the crotch. It pretty much puts you in a spot, there's not much moving around but I am happy with the Dent. The affinity is pretty minimal padding compared to the inform. I would say the inform has twice the padding and although the dent is bigger, so is the overall saddle including the nose width. The inform is more pear shaped and the affinity is more t-shaped. If you took a ruby and aspide glamour and combined them, you get an Affinity. I hope that helps.
2009 Specialized Roubaix pro/SMP lite 209
2010 Trek 4300/Specialized ariel 155