Tom. I have owned a MK 3 for 6 months and 5 thousand miles, and after owning a MK2 in 011.
The MK3 is a brilliant testimony to Kawasaki's policy of improving the product in ways that owners have asked for. The MK3 has way better brakes, way better suspension, whilst also looking more attractive.
I have been truly amazed at just how good the MK3 is. After many years on bigger, more powerful bikes I was expecting my return to a less powerful bike to be a massive shock to my system, but after age related health issues pretty much forced my hand, and after both MK 1 and MK2 Versys 1000s had given great pleasure ( they are a great bike, with a total peach of an engine). I have arrived back at the little Versys.
Once I got my head round the fact that they are a 650cc twin, mine has proved to be a little stunner, and for a 650 twin will go like sh--of a chrome plated shovel if you so desire.
The suspension is better for me than the oe set up on the bigger bike, and so far I have felt no need to make any adjustments to the front, and just a slight tweak to pre- load on the rear.
I don't feel that the brakes are lacking in any way, and are perfectly acceptable for normal road use.
I have also found that the MK3 is very comfy, and MY arms, legs, and general fit is excellent. I am 6 foot tall, and 15 and a half stone, and do feel very cozy.
I tend to buy jack of all trade bikes, and the little Versys is right up there with the best.
I would advise a looooong test ride, in order to form an opinion of your own, you should be warned though, that to do so would likely result in a big hit to the wallet.
good luck Geoff