I bought a bike off CL last season that came with SR and two wheelsets, a set of Shamals and a set of old Chorus/Open Pros. When I'm riding the bike I honestly can't tell the difference between those and the other dozen+ other wheelsets I have. People say wheels are one of the best upgrades. I can only assume that's true for people who are more fit than I am. I try not to buy anything shimano because I don't like the way they do business, but I still think the value of their cup and cone hubs is impossible to beat.