I agree with Bob - the IKONs are good units, and the Hagons can be had with springs to match your weight and are good units. I've got Progressive shocks (inexpensive) on my R65 - they were certainly better than the worn out, saggy stockers, but they are kinda stiff - they handle pretty well for spirited riding, but it is hard to get them adjusted for a less aggressive mode.
On another note - I thought that your (relatively new) H-D Ultra had a feature that basically shut down fuel/power to the rear cylinder when stopped for awhile to reduce the 'roasted nuts' effect?