Ducati Monster s4r vs. s4rs (2007)?

I was wondering what peoples'thoughts are on the Ducati s4r? I am considering purchasing one and am trying to make an informed decision. Also if it is worth it to go for the s model?

They are both awesome bikes - ridden a couple of them leading demo rides. I would go with the SR4s - it is a much better machine, with better power, and better handling characteristics in the twisties.The s version is really quite a deal for only a couple of extra grand! Of course, whether either of them is the right bike for you depends on what kind of riding you like to do.....