The 175 isn't very noisy compared to many other jets. Nothing like the 145 or 737 at all.

The best headset for you is the one that you find affordable, comfortable and helps you hear with clarity. That particular headset is very subjective.

But that said, I've been using the Bose X for 14 or 15 years now. Have had it rebuilt once. It's quite adequate in the 170/175. Like any headset though, after about three or four hours into your flight, nothing feels good.