FYI I was in a local shop with a pair of old 205 cm Ragos (later Amundsen) to have NNN BC's installed. There was a pair of 205 cm M55's, so I did a quick hand press test. To my surprise, I could not press the M55 skis fully together around boot place. On the other hand, I was able press together the Ragos. So secondary camber seemed stiffer in M55.
With 82 kg, in paper test, a paper moves slightly under one of the Ragos, but not at all under the other. I would say the M55's are stiff. Wasn't it so that even the blue Glittertinds are quite stiff, too? Similar to Amundsens?