I have a vitesse and I really like it. In fact, I tried several saddles at the store, and knew as soon as I sat on the vitesse that it was the saddle for me. I'm afraid I'm not much help, though, in finding a place that will let you return it if used. I just tried several bikes with different saddles at my LBS and then they swapped saddles for me when I bought my bike.
I'm having trouble figuring out exactly which vitesse I have (I have two, and they both look slightly different, but feel the same), but the newer one definitely looks like the one in this picture. I do not use aero bars, so I'm afraid I can't help there either. Sorry!
I would recommend checking several shops and see if any carry a Vitesse and would let you try it on a bike your size. My LBS would do that in an instant for someone looking to spend $100 or more... Good luck!