I have been riding a perfunctory and rather average Suzuki GS500 for close to 10 years now. In fact, I like them so much, that this is my third one. I rode a GS every day in London for three years, which was some of the best bus-dodging moto-riding of my life, and I have had two in Melbourne.
They are robust, nimble and forgiving of bad riding, they hardly ever need servicing, they are skinny enough to negotiate peak hour traffic, and big enough to escape the city on weekends (unless there is a headwind). They aren’t particularly powerful, but as a daily beat-the-city-grind bike, you can’t go wrong. You could possibly do a circuit of Australia on one of these things, at least this is what I tell myself as I manoeuvre the Benthamite grid of humanity as I ride home each night.