I use a Lightspeed 30 3G headset in a Shorts 360. It is so much better than the David Clarks I had before that. I routinely fly 3+ hour legs and the head vice was not acceptable. The Lightspeeds are very comfortable and quiet ,but they take up more space than the Bose X and they look kind of stupid. I haven't tried Lightspeed Zulus yet, but I'll bet they are pretty nice. An FO at my company loves them. He uses the bluetooth on the Zulus to listen to music from his cell phone.

One more issue with Lightspeed headsets is their durability. My microphone stopped working after a year. Parts were shipped out quickly and at no cost to me, but I still had to buy a crappy $125 headset at an FBO to finish the trip.

In a turboprop you will need ANR. It is probably just a question of Lightspeed or Bose.