In order of preference, as I have had all of these, at great expense.
Original shocks on my 05, crap, kept jarring my back.
Progressives I found too soft and bottommed out too easily, with no damping adjustment on standard springs and too hard with HD springs, probably due to no damping adjustment for different spring rates.
Shocks on my Roadster are a lot better than the old bike.
Hagons were a big improvement on Progressives but I wanted better.
Fournales HD Alloys. Air shocks, expensive, pain to adjust if you want to take a passenger or different load. The ride is far better than anything else I have tried. 2000 miles round France and Spain 2 up, overloaded and with a broken right leg, no back pain, just faultless, perfect in fast twisty bits too.. Expensive. Expensive. Expensive. So Hagons best compromise for cash.