Blue Hawaiian Helicopters is very good. Their tours are top notch. This is my second trip with them and they do a great job with ensuring all seated in the helicopter (our family of 5, another couple and the pilot) can see everything. The pilot moved the helicopter and made 4-8 sweeps of certain areas to ensure everyone got equal views. They will also do a DVD or BluRay of the trip for $25. We saw flowing lava from the crater on the Big Island and followed it to the ocean. Amazing. My kids loved it. A little bit pricey though. About $200 each after some early booking discounts (need to book online, minimum 5 days in advance for 15% off). The drive to Hilo from Kona or Waikoloa is about 2 hours each way.