What do you mean warm out of the box? Heating up fast? The cutesliving store has a pair for 38€ during sale so I'm tempted but I'm afraid those rivets might fail like tracevelo has reported on his - they weren't kactus but the rivet looks very similar. Price seems a bit steep if compared to the zrace that goes for 10€/pair and there's no claimed figures to compare them
By the way the CD-01 are way overpriced in the last link, it can be had for 1/4th the price in other stores
Trace Velo reviewed the Deckas rotors. They fixed those rotors though, just make sure you get the updated versions in the brown cardboard sleeve box versus the white sleeves. The white sleeve rotors are old stock. They only sell them in 6 bolt though.
I'm running the Kactus rotors and there is no rivet play out the box. I'm running both the 6 bolt and CL versions. The 6 bolt rotors are on my gravel bike sees nothing but dirt and single track and the CL rotor bike does a ton of descents. Both are fine.
Those CD-01 are just cheap rotors you can get off Pick 3. The CD-02 rotors are the ones to get.