Yes, these springs ride nice. They're not as comfortable as the OEM active suspension, but it's still a comfortable ride and nowhere near as harsh/stiff as coilovers. I also replaced the shocks and OEM components when I installed the RS-R springs.
Installation was long and difficult compared to installing coilovers; however, the tradeoff is better ride quality on a shock & spring setup.
Shipping was a few weeks. I believe the springs are made to order and then it takes a couple weeks to ship from Japan to the US.
Checkout my recent suspension thread for more information:
q45-fgy33-touring-active-suspension-sho ... 29285.html