The stock shocks on my '05 would "throw" me off the seat at any agressive bump. Apparently my 175 lb stature was not enough to make 'em work. Maybe they were designed for lots of weight, like a "big" dude or riding 2 up.
Anyway, I went with Progressive 440's and have been very happy. Lowest setting when it's just me on the bike (I never ride 2 up, the wife hates bikes) or bumped up 2 complete turns when loaded for a trip.
Love 'em. Definitely the way to go. Cost a chunck of change but will provide the ride you desire.