I had Pro Comps on my previous truck (Silverado) and wasn't overly impressed with two that blew out within the first 5K miles. They did however warranty and stand behind their product. My Cummins now has Bilsteins and I've been very happy with them for a decent all around shock that won't break the bank. They were definitely an upgrade over stock but as mentioned above, solid axle diesel trucks aren't going to have great ride quality unless you throw a lot of money at the suspension.