Well my first order on the Hagon rear shocks was pretty close for comfort/handling but still hard on my back so when i sold the black C5 those shocks followed shortly afterwards. From memory they were the medium damper with 18kg springs.
This time round I purchased the softer damper with the 16kg spring. Today, I took it for a 60kl run and was very happy with the ride and the way it rode over the bumps - and I had it set at it's lightest setting.
I might try the other 2 adjustments over the next few days and see what happens to the ride etc.
What i did like about the fitting to the new C5 was how snug the shock top fits into the tower.
On my old C5 there was a good 1/4 in play in either direction and you could easily wiggle the shock side to side.