I've got KBee coilovers in front and BMR control arms rear with F & R Addco sway bars. You do feel the difference both in handling and ride.
We installed a set of Spohn rear arms on BlueSSR's truck last year (!) and are installing a set of BMR's on Smokey's truck this year at the Tech session.
Have them shipped directly to my office.
A word of caution, if you have an aftermarket diff cover installed, the aftermarket panhard bar may not have clearance without rubbing.