I had both and kept the hyperpro. I just could not get a comfortable setting for the wilbers. (Will put the up for sale when I have some more time).
They were fine on pristine roads, but killed my neck on degraded roads, of which Belgium unfortunately has quite a lot. Potholes were horrible.
Hyperpro's dive too much, because they seem progressive (too soft in the beginning) over a longer part of the spring.
But I'd buy them again if a change is needed. I also had the hyperpro rear spring installed, but I don't really feel a lot of difference with OEM.
I'm no specialist, so I had my dealer set up both sets. He said the Wilbers would perform well on a track, but are way too hard for Belgian roads.
Hyperpro are a bit more compliant, but probably too soft for the extreme curve thrill seekers among you. Me, I just enjoy spirited driving on the highway and b-roads, but I'm not a twisties addict, so I don't need the ultra setup, nor can my neck handle that.