I've owned the first generation Super Record since it first came out. Have been riding and racing since then with tens of thousands of miles on the same group. I've even crashed on 3 occasions, twice on the drive-side. The group is visually looks like its been through a lot. The rear derailer has even been bent a little and does not get a long well with a lot of wheels as it tends to rub the spokes when you really torque the bike out of the sadly from side to side even with the hangers straight (checked by myself and shop mechanics using a rear derailed hanger straitening tool) and with the screw limiters set correctly. But it still runs strong, performs just as I got it when it was new, and despite the rear derailer and spoke issues I've never had it go into the rear wheel.
The 2009 SR group is now on my "crit" bike. I built up a bike with 2014 Super Record late January. The bike has exactly 3,230 miles and has been raced almost every weekend all the way through the beginning of May. It's seen almost every road condition you can think of while on the way to numerous top tens, podiums, wins, and even conference championships, all in USA Cycling sanctioned races. Bike has never been crashed and does not have a single scratch on the bike. I have always done my own work on my bike since I've started riding in 2009. And I have been working at an internationally well-known shop where the mechanics have been looking over my work to make sure it's ok.
Well, I road to a crit practice about 20 miles away from home and rolled into the parking lot. The gearing was set in the big ring and the 10th largest cog (where I always have had it set, habitually for the past 5 years, when starting from a stop or slow roll), in this case a 25 tooth cog. After rolling into the parking lot I gave one easy push on the pedals and I hear a little snap. Nothing loud or any grinding of parts, just a rather quite audible click. And this is what I saw: