The used Vision R40 (Short Wheel Base) I bought came with USS. It was tough to get used to given I had never ridden a bent before. But once I got used to it, it was very comfortable and I really enjoyed the unobstructed view of the road. Despite this, I found it difficult to start in city traffic. I picked up Vision's OSS and now 500 miles later, will never got back to USS. It is far easier to manuveur in the city, at least for me, with OSS.