Two questions - you don't have any body lift, do you? And how do like your tires?
Correct, I don't have any body lift. All spring. I had them custom made by "Alcan Spring". They cost about the same as buying an all spring lift but you get to tell him how much weight you carry and what kind of "Bolt on" stuff you have. (bumpers, tire carriers, winches) I've been very happy with the springs.
As for the tires, let me start by saying I'm pretty new to wheel'n so I have nothing to compare them to really. I had a jeep a long time ago with BFG ATs but it never saw anything worse than trails. I bought the Procomps because the BFG MTs were on backorder and I wanted some tires now if you know what I mean. Also, I know that eventually, I'm going to swap my axles to 14b FF and D60. When I do that, I'm going to step up to a 37 or 39. not sure yet. At that point I'll hold out for the new BFG MTs.
So far these tires have done well. I hate mud but on the trail and on wet rock they grip really well.
The down side is, I've had them on for about two months and I can already tell they aren't going to last very long. Also, on cold mornings, it takes a half mile or so to work the flat spots out.
They are pretty quiet on the HWY at 65. Also, they are siped so the wet traction is great. In fact, I've never slit in the wet. that's about all I can say about them.