I believe stock shocks are preset at 3 at the factory. I adjusted my oem shocks on my 2010 RTs immediately to the highest setting (5) and played a bit with the front tire pressures to find that fine line between comfort and handling. Ran with these shocks for two years. The shocks on later models of the RT are reportedly better and most people just fiddle with the settings rather than invest big bucks in performance shock upgrades.
I lived with the oem shocks for two years while spending my budgeted add on monies on things like driver's back rest, new grip covers, additional rear lighting, GPS etc.... Finally sprung for the front Elka shocks this April at Spyderfest. And yes, they definitely improved the handling characteristics of the RT, especially in reducing body roll while cornering and providing a more stable base while driving in high wind conditions and while passing transports on the slabs.
If you have a 2010 RT then I would highly recommend this shock upgrade, but if you have a later model Spyder then you might want to just try stiffening the oem shocks and see if this does the trick for you. Doesn't cost you anything to adjust the shocks and might save you some dollars if the oem's meet your needs.
Safe driving