ok, im running the rancho 4" with rancho 5000 shocks - have been thinking about going to rancho 9000 or bilsteins, will i notice much if any difference from either of these 2 sets ? if so, what and how much ? or do i just leave it the way it is.... I was hoping to get a tad bit better shock with more smoothness rather than firm ( a better working shock in all conditions ) if thats even possible

I plan on running the bilsteins with the Rancho lift on my truck. I heard great things with using the bilsteins. By the way do you have any pictures of your setup?

I would personally run Rancho. You will like the ride and the adjustability feature. More control over how your truck feels. Good luck

Tbone, I think you and I have essentially the same setups on our trucks with the exception of shocks. I have 9000's and love'em. I run 315's and the ride is better than it was stock.