We chose to do a full island 60 minute tour via helicopter since we were told 90% of Maui is only accessible by helicopter. We flew Sunshine Helicopters (www.sunshinehelicopters.com) which took us into see Honokohau Falls, Maui's tallest waterfall, awesome views of the Haleakala Crater on down to the Seven Pools & the Hana Rainforest.
I loved the scenery in the first part of the flight, but I warn everyone who is susceptible to getting motion sickness to take Dramamine before take off; otherwise you WILL get sick. As was my unfortunate experience. I kept wishing the damn thing would land but my husband, who was not afflicted, liked the tour thoroughly.
It is definitely worth the money to take the tour and see all the amazing waterfalls, the lunar landscape of Haleakakla and the lush contrast of Hana. My minor complaint about this particular tour was the piped-in music and the cheesy comments by the pilot, but, all-in-all, after I felt better, I had a good time.
HINT: If you want to get good pictures from inside the cockpit, wear black because it generates no reflective glare.