Happy Rutherford user here.
Had front and back done at same time as getting harden chromed king pins fitted.
Transformed the car from the Standard setup it came with (what ever springs were available in the parts bin at the time!)
New Elms fitted the Mulfab bearings at the same time and selected the springs to accommodate this.
Why Rutherford? in my case it was a no brainer New Elms is 15 minutes from me.
Obviously I can't compare it to a suplex setup as I haven't had one and this is my only Morgan.