Had them on for the last 4,500 miles or so; they're great. Compression and rebound damping are combined so you're not messing about adjusting them. Set the preload and then choose 1 of 12 damping settings and you're on your way.

Combine with progressive springs (I stuck with Hagon) and a slightly heavier oil and the handling is transformed.
I would, however, recommend doing the fork springs first; the rears are for comfort, the front for safety.