Sony's 1000X series has been the default answer to "what noise cancelling headphones should I buy?" for years. We currently have both the newer Sony WH-1000XM5 and the older Sony WH-1000XM4 in refurbished form. They look like cousins, but they're built a bit differently, and the right choice depends on how you'll use them.
Meet the newer one: WH-1000XM5
The XM5 is the later generation, with a smoother, more minimalist design than its predecessor. The headband and ear cups have a cleaner look, and the overall feel is a bit more modern.

We also list another WH-1000XM5 in black, so if one listing doesn't suit, check the other for the condition grade and details that match what you're after.
Meet the older one: WH-1000XM4
The XM4 is the previous generation, and it's still a very capable pair of headphones. It's been popular for a long time for good reason: strong noise cancelling, comfortable fit for long sessions, and a sound that most people find easy to enjoy.

There's a second listing too, the WH-1000XM4 in Acceptable condition. Refurbished grades describe cosmetic wear, so read each listing's grade before you choose.
The differences that matter
Design and portability
This is one of the clearest differences you'll notice in person. The XM5 has a sleeker, more rounded look. The XM4 is the one many people associate with a more traditional fold-up style of headphone, which can matter if you're squeezing them into a bag or a carry-on. If you commute daily, think about how you'll carry them and check the listing for what's included.
Noise cancelling
Both are in Sony's flagship noise cancelling line, and both are well regarded for taking the edge off trains, planes, open-plan offices and noisy households. The XM5 is the newer design, so it's the safer bet if you want the most recent take on that tech. That said, plenty of people find the XM4 more than good enough for everyday life, and the gap between them is smaller than the gap between either one and a budget pair.
Condition and cosmetics
Because these are refurbished, the condition grade is part of the decision. The listings are labelled Good, Excellent or Acceptable. In general, a better grade means fewer visible marks. If you're the type who'll baby your headphones, an Acceptable grade with a few scuffs may not bother you. If you want something that looks as close to fresh as possible, go for the higher grade.
Who should buy which?
- Choose the XM5 if you want the newer generation, you like the cleaner modern design, and you plan to keep the headphones for several years.
- Choose the XM4 if you want a proven, well-loved pair and you're happy with a previous-generation model. It's also a sensible pick if you prefer a design that's easier to pack away.
- Consider the Acceptable-grade XM4 if function matters more to you than looks, such as a spare pair for the office, the gym bag or the kids' school trips.
A cheaper-feeling alternative to think about
If you don't need flagship noise cancelling, the Sony WH-CH520 is a simpler pair of wireless headphones from the same brand. It sits in a different tier, so don't expect the same level of noise blocking, but it may be plenty for casual listening at home or on the bus.
Our practical advice
Before you buy, work out where you'll use the headphones most. For a long flight or a noisy commute, the flagship tier is worth the attention. For background music and podcasts around the house, you may be spending more than you need to.
Then look at the condition grade, read the full listing for what's in the box, and pick the generation that fits your habits. Neither choice is wrong. The XM5 is the newer option, and the XM4 is the tried-and-true one. Either way, buying refurbished is a good way to get into the Sony noise cancelling line without going for brand new.