Joseph,
I am glad you found an affordable shock that works well for your PC.
With every trip we take with our PC, I am convinced more and more that a heavy duty shock is the right choice for the PC application. I chose HD-Bilsteins and are happy with them. You chose Gabriel and are happy with them.
I feel a softer shock (comfort ride) is not addressing the harsh ride properly. The proper tire pressure for the actual load is the best place to start.
If owners have PC model 2100 or 2350, I would weigh the rig to determine if the rig could benefit from softer front springs that handle the actual load without having so much excessive weight margin.
I have no experience with the rear suspension, but I wonder if models 2100 and 2350 built on an E450 chassis could benefit from the removal of a rear leaf spring or two.
Having springs that support the actual load without so much excessive margin will yield a more comfortable ride and also lower the stance by some amount. I know it is popular to raise the rear, but lowering the front with softer springs raises the rear by some amount.
Having a level rig is ideal. Having it stand a little lower has both pros with handling and cons with tail clearance.
One thing for certain, everyone has their own opinion on this subject matter.