I have been running them for 2 years without issue. Along with the UCA's. I am very happy with them and have no problem recommending the AP bilstein CO's or the Toytec ones that are basically the same.
I am running a Sonoran Steel 1.2 rear. Translates to FJ80 coils and Bilstein 5100 shocks. The rear is a little spongy or soft but overall the truck rides really nice. I wheel it regularly and also average 25k miles a year.