I have the KORE Chase kit on my '06, and I also have a Snug Top shell with usually 100-200 pounds or stuff in the bed. Right now, I have 52 psi front and 50 psi rear with the stock BFG tires.
On the 5, 91, or 405 in Orange County, CA, it beats the crap out of me and my girlfriend. In the 80s, I had a lowered minitruck that rode smoother - and it was so low it often scraped off the lane marking dots.
Granted, the system works great offroad, but on the expansion joints it is horrible (worse than stock).