Our best friends that we travel with a few times a year bought a second hand one (approx. 2008 model), they love it - they previously had an older Kedron with a combo ensuite and the Blue Sky has full ensuite.
The two caravans according to them are of comparable quality, both are single axle 18ft full vans, the blue sky is significantly lighter than their old Kedron. They did have a fire in the stove of the new van (replaced under insurance), that was the only significant issue they have had. Since been on extensive trips each lasting over six months Adelaide, Western NSW and to Qld. Both of them happy campers.