Here's what I have to say regarding Calmini shocks. I have Calmini extended in the rear and I have Bilstein 20% stiffer in the front. I got the Bils much later than the Calmini.

Bottom line: the Calmini shocks work a lot better than stock shocks, especially when the later are old. Bilstein shocks work even better.

I've had my Calminis in the back for just about a year now and they are holding up O.K. so far but will be repaced with Bils pretty soon.