Why the J230
I guess for me having flown the smaller LSA and J160 and wanting access to something for longer trips - eg Temora, Birdsville, camping down the coast etc the J230 seems a natural progression from the smaller birds in the fleet.
As someone that hires rather than owns aeroplanes, for me the Jabs are probably the most commonly available, and I'm happy to support something manufactured (airframe and engine) in Oz.