Go for the Versys! I've got an '07, and I absolutely love it!
I also cross shopped the Wee Strom and the Versys. With 17" rims, the Versys tends to lean more towards the sporting side in its handling. The Wee strom has a little more space for a passenger and luggage. The 650 cc inline twin is fuel injected, no choke to fart around with. Power is nice and smooth, I think it's about 68hp. It's plenty quick, I've never wished it had more oomph. The engine is based on the Ninja 650, but with different cams. It has less hp than the Ninja, but more useable mid-range torque.
We seem to be roughly the same size. The Versys is tall. Shorter riders will have a bit of trouble flat footing it when stopped. I have no problem, my heel is just barely off the ground. I installed a set of blocks that lower the foot pegs 1 inch straight down. If you have long legs, they made a huge difference in leg room comfort.
The only common complaints about the bike seems to be about the seat. Stock, it slopes forward a bit, squishing "the boys" when stopping. There's plenty of fixes for it depending on how you find it in its stock form. I have my seat installed with the front tab sittting on top of the tab that it's supposed to slide into. It's just enough to take some of the slope out of the seat. I may still look at an aftermarket seat in the future.
There is no shortage of aftermarket goodies for the Versys. There's a great forum out there too.
http://www.kawasakiversys.com/Another thing I really liked about the Versys is that they're not very common. You see a lot more Wee Strom's out there than Versys'. Mine only has Kawasaki and Versys stickers on 1 side. When people look at it from the other side, most of the time time they have no idea what it is.
If you have any more questions, please feel free...