I tried out the Satnav over the Anzac day weekend, driving from Sydney to Ulladulla and back. I took a portable TomTom for comparison, and boy, did it drive the family mad! Two sets of voices, telling us when and where to turn. Usually, the Kluger GPS voice came on first, followed by the Tom Tom, making it sound like an echo. On the Princes Highway, the Kluger GPS did not use the highway speed, and kept interpreting it as a city road (avg speed of 50kmph) and over-estimated the travel time. On the way back, however, I came back through Moss Vale and got on to the Hume Highway. On the Hume Highway, it interpreted it as a highway (avg speed of 90 kmph), and was much more accurate on the timings. BTW, I have a Gen 1 (2006) Kluger Grande, using Sensis map v15. Interestingly, when I took the car on unsealed roads to Pebbly beach, the Kluger GPS got lost completely, and kept showing my position significantly away from the road I was supposed to be on. The Tom Tom, albeit with a weak signal, still plotted my position quite accurately.