+1 to the V56. I just got it for mine and went on a 3500 miles, 2 weeks tour. I did by the Givi light kit and I like it very much, but I didn't use the supplied connectors. Instead, I just used a waterproof connector out the bottom of the case. There's only one thing that I'd like to change, and it's the silver trim. I'd like it black, like the V47 that is being sold with the Versys 1000 with the touring package, which also says Kawasaki on the side. Very neat.
A sticker inside tells me not to exceed 75mph with it, but I took it to 100, no problems.
I got it rather cheap from a vendor in Italy (I live in Germany) for €225 (USD250), shipment included. List price of the case here in Germany is comparable to the US: €320 (USD350).