When looking for new wheels I was deciding between these, Mavic Ksyrium SLR, and Shimano Dura-Ace c35. Unfortunately, my team doesn't have HED as a sponsor. So despite having to pay full price out of pocket, I ended up choosing these and haven't looked back. I've put HED ardennes FR rims on previous training bikes and loved them. So it was hard not go with a new wider version with a new brake track. The super wide rim lets me ride at pretty low pressures on the road about (75-80 psi), which makes for an incredibly smooth ride on horribly bumpy Sonoma County roads. They aren't the lightest rims, but they're not super heavy. Consequently, I don't feel like they'll explode if I accidentally hit a pot hole, but I still can take them climbing in the mountains. It's on descents, where these wheels really show their excellence. The braking is noticeably different, and I can break into turns later than a conventional alloy rim surface. I haven't had a chance to bike in wet conditions yet, but I'm actually looking forward to it.
Just like the other ardennes these wheels feel great on gravel with 25mm/28mm tires and also can corner well in crits. The only little complaint I might have is that I have issues get my gp 4000s tires onto the rim without tire levers. I use these as conventional clinchers, and I'm not sure if this has to do with the tubeless ability of the wheel. It's not a huge issue.