I did not take a helicopter tour on Oahu. However, I did take one on the Big Island (I would recommend it, if you were going to the Big Island) with Blue Hawaiian. I liked the company, as I know they had our safety in mind (our tour was cancelled because of weather a couple of times). It was a little bit of a pain to show up only to be told a few minutes prior to departure that it was being cancelled, but we understood the situation (it rained ALL day the day our tour was scheduled). They also worked with us to get us on another tour when their only available ones before we were to depart the island were full. I found the helicopter pilot to be VERY informative and liked that she tried to incorporate my kids into the conversation. I cannot speak to the tour of Oahu they offer, but if it is as well run as the one on the Big Island, it would be well worth it. I enjoyed that they had helicopters with much bigger windows because none of us had to strain to see anything. I also really liked that our pilot made multiple passes alternating the side of the helicopter with the best view so that everyone was able to see (was especially important when looking at the lava lake at the top of Pu'u 'O'o).