It's always been fashionable to slate Britpart on forums but I think their cellular dynamics shocks are pretty good and you'd struggle with an argument for spending more I found them vastly superior to old man emu on a Disco.
The problem on the P38 with shocks is it's a trade off between ride and lateral stability where you can't quite square the circle. Most options considered superior to OE the ride is a bit too harsh particularly with poly bushes, again even the much vaunted SuperPro - changing the ones on the end to elastomer I think does improve things slightly even if you leave the rest poly. Stick OE shocks on and you get the softer ride back but the body roll through corners to match.
I think really the travesty is they never fitted ACE to their flagship model despite it being fitted to the Disco since 1998 that's what's really missing and you just can't make up for with premium airbags and firmer more expensive shocks without compromising the ride.
What I have been meaning to try, as the Konis are adjustable, is making it softer at the front where the ARB is and the radius arms face potholes and leaving it firmer at the back that lacks an ARB and has a trailing arm.
The trick is don't fit poly bushes they are crap. Fit standard Boge shocks they give the best ride. Body roll is almost non existent on my P38. Mind you i don't drive as if i have stolen it.