I've found Hagon's midgrade dual shocks with single damping adjustment to be very good value at ~$400 US/pr. I don't have the gear for real quantitative measurement, but in the seat of the pants it feels as though the damper control is set up to maintain the classic rule-of-thumb ratio: 70% rebound damping to 30% compression.
If you want decent customer support, you might think twice before you buy Hagons from Michael Selman's Bella Corse Racing. He informed me once that he adjusted suspension sag to control ride height. 'Nuff said; if you know what's wrong with that you don't need an explanation, and if you don't know, you need experience more than my blathering .
Selman refused to exchange a pair of too heavy springs that Hagon got wrong. Maybe Hagon's tech paid attention only to the weight spec listed for a stock D and ignored the weight numbers Hagon requested and received from me in reference to my significantly lightened machine. Said Selman,"I won't rob Hagon!"HUH? I won't belabor the point with any value judgements on the character, ethics, and impulse behind that behavior. It speaks for itself. Never again.
Progressive? Most of their stuff lies in the range of lowest priced decent shock absorbers. They are probably a notch up from Hagon's cheapest shocks that have no damping adjustment. Too bad Ikon cheapened the build of their shocks. Their original Koni repops were damn good. YSS? Installed one on a Zook GS500E behind forks with Race Tech emulators once. Fiddled with sag, fiddled with damping, shock didn't do more for compliance and general ride quality than the cheap OE takeoff had done. Others' experiences on other bikes have obviously been better or YSS wouldn't have stayed in business, but apart from the bad taste left in my mouth by that purchase, it doesn't look to me as though the features of their midrange dual shocks justify the price.
Peace.