The Sony WH-1000X M2 wireless noise cancelling headphones are a great pair of headphones, even at its regular $349 price tag. But if you can get them under $300 it's a steal. Now you can get a pair for under $200, though these are certified refurbished, so not exactly a "new" pair, but it's still worth buying. The certified refurbished model did not even drop this far during the holiday season, so now is the perfect time to pick up a pair of the WH-1000X M2.
These headphones from Sony are a little over a year old, announced at IFA in 2017, but are still more than worth it to pick up right now. The reason why these are so popular is the sound quality, and the active noise cancellation included here. These are great for taking on a plane due to the active noise cancellation, but it also sports ambient noise. So you can let in some noise, like for instance if a flight attendant is asking you a question, you can still her them without taking off your headphones. Now these are not technically part of Sony's Extra Bass lineup, but they do have extra bass. Which makes these a great pair of headphones for the audio quality, and the battery lasts for nearly 24 hours.