I have a 2011 Ninja 1000 with 65,000 kms and am very happy with the bike. Change to a 55 profile rear, stronger rear spring with suspension set up by Accelerated Technologies and the thing handles really well. Love the mid-range and upper power bands. Ride position is great, but legs get a little cramped after a long ride (I have a 34" inseam). Adjustable wind screen really does make a difference.
A friend has a 2012 Z1000. Slightly more nimble ride, but definitely more tiring being exposed to the wind. I'm not crazy about the Z1000 dash either.
Down sides
- Insurance companies think its an SS. Had to negotiate for a week before they gave me a reasonable rate. Z1000, no problems. Just shows how little insurance companies know about bikes.
- Not great for longer 2-up touring, and bag capacity is limited to 1 tail box or the 2 side bags, not both. Structurally the rear is not designed to be loaded too much.
No experience with the Fazer. I've only ridden the S1000R in a follow-the-leader demo ride. Very nimble, light and responsive, but didn't have a chance to really explore its potential. But I have spent a couple hours on the XR. The thing loves to bounce off the rev limiter. Definitely more power in the top end, but I almost prefer the mid range of the Ninja. Brakes on the XR are
much better than the Ninja.
If you're looking at the Ninja 1000, you should also consider the GSX-S1000F. This review puts the Ninja better for touring, but the Suzuki better for almost everything else.
http://www.motorcycle-usa.com/2016/...00f-vs-kawasaki-ninja-1000-comparison-review/