My bike went from a "ho-hum", don't run over any bumps ride to a "Oh yeah, bring on the bumps", extremely enjoyable ride.
Changed out all three springs with Progressives. Now with all of the cornering clearance, I routinely leave my Harley Ultra Glide buddies behind in the twisties, much to their amazement (they're always commenting about how close the saddlebags and exhaust tips get to scraping the road in the first few minutes that I haven't pulled away from them).