We did 2 tours with Sydney HeliTours: The first tour was a 20-minutes flight over Sydney harbour and the Eastern suburbs (Watsons Bay, Bondi, etc.), which was fantastic. The second tour, which we booked after the amazing first experience with them, was a tour to the Blue Mountains combined with a private 4WD tour in the blue mountains. This tour was even better than the 20-minutes Sydney harbour flight and we can highly recommend that (also, their local partner for the 4WD tour called Blue Mountains 4WD is excellent, as I wrote in a different review).
The whole team at Sydney HeliTours is lovely and the whole experience, from booking, to the complementary pick-up in the CBD, the time at their base at Sydney airport, the flights, the pilots, and the complementary ride back to the CBD was excellent
We can absolutely recommend Sydney HeliTours and we are very happy with our choice.