I have about 105,000 miles on the DS and, as the song says, I've been everywhere man. I put 5,500 miles on the OEM Metz before it wore out, and was worried every time I used the brake. I find that the DS handles any road conditions that I have encountered, at speeds that may not be considered legal by some,
without a problem. (If you are doing racetrack speeds then do them on a racetrack with a bike that is set up for a race track.)
The main down side of the Dark Side is that you have to counter steer a bit more. The second most common problem I have had is taking the time to tell everyone who asks when they see it that it works. The third hardest problem is working out on what to spend the money I saved. (The picture on the left gives the answer.)
Of course, your results may vary, so ride your own ride.