Let me start out by pointing out that I'm not as smart as most of the people on this forum. I'm an old guy that's been doing triathlon for about 5 years, the first 4 on a cervelo P3 and this year on a Diamond I bought from someone without any connection to rustersports.com. The frame was untouched as it was a replacement for a frame that had been replaced under warrantee?? It cost me a lot less than a new P3 Six would have and for years I'd fought the bike/human interface on my P3. I'd tried a butt load of saddles on my Cervelo and the idea of a 'softer' ride interested me, so I bought the Dimond. I understood it was an unwarranted purchase and don't expect TJ to give me anything if it craps out today. I would be impressed if they would stand behind all of their frames, but don't expect anything. So far this year, I've trained and raced on this thing 3 times and am happy with the ride, no bike/human interface issues. Like I said earlier, I'm not smart about coefficient of drag, yew angles, etc. but I'm enjoying this bike and its that simple. I have also learned in the last 5 years that the longest distance in triathlon is the 6 inches between your ears.