Just want to post a little comment about my new board. I just bought the 2008 skywalker Pro Rider 131x40 cm. In 2007 I have been riding the Nobile 555 135x40 cm, so this is my comparison.
I rode the skywalker yesterday in 16 - 20 knots with my Royal Era 14 m2. My weight is 90 kg.
I was curious if I could feel a difference compared to my Nobile, as their measures are pretty similar. Well, their are different. The conditions was a bit choppy, and the Skywalker board just rode super smooth! It has a bit wider stance than my Nobile, but it only took a few minutes to adjust. Planed easily and jump really nice. I found the landings "softer" on the knees.
I am not a super expert in going upwind and have sometimes had a little difficulties on the Nobile in more marginal conditions. Yesterday I had no problems, but I did also have okay power in the kite.
So all in all I am very satisfied with my purchase. If you have the opportunity, you should really give it a test run. I think you'll like it !!