I have a 2014, so similar to the 17. Its been a great old bike, 42k now, nothing has gone wrong. Cheap to run also, good mpg, easy to service, good brakes and OK suspension. Only down point is tyre life on the rear but I like the torque to much!
I would say the 650 is more comfortable, especially the 2012-2016 model. The 1000 has a horrible seat and screen which needs changing and it has a bit of weight plus runs a bit lumpy at low revs which the 650 doesn't.
I keep thinking about changing to a 650 but every time I ride the 1000 I think this will do awhile yet.