Spooled-Up, that would depend on your driving style and use of the truck. The springs are the same from one to the next, so it's a matter of where you drive mostly. All highway and occasional off-road, the PACE is suited for that. Any off-road at speed, go CHASE no question. But, the entire PACE system is guaranteed for life.
Lightman300, it will be perfect, you will like the look, as it will be almost exactly level. Just did 2 of them, and BlakeU has a topper on his, the other 05 had nothing on the bed, and they looked identical.
Like Greg said, the LB trucks sit a little lower in the front then the shortbeds. I have the extra 300lb up front and with the heaviest springs, I have a slight rake, but I also run pretty low pressures on my MTR's which makes it loook more nose down.
BlakeU, keep meaning to call you, just need your local address, I have that check for you.