Bose. They cost a lot, but are worth the money in my opinion. Not only are they a great headset, but they have superior customer service too. I've used them in the pistons, dash8, crj, and now the E175. Many say it's overkill, but they are comfortable enough to wear for 8 hours of flying in a day, and I feel less fatigued compared to wearing the 750's. I tried the 750's in both jets with and without earplugs and ended up wearing the Bose in the end.