Full price, the WH-1000XM4 aren't far off from their more expensive cousins. They have an RRP of $349, around $50 lower than the XM5. Generally, however, you'll find the older model at lower prices, on account of their age — usually under $300. For that price, you're not going to find a better pair of over-ear noise-canceling headphones.

Amazon is delighting us with substantial discounts on Sony's two most recent ANC headphone models. When it comes to bang for your buck, the deal on the previous WH-1000XM4 appears to be the most appealing.

It's fair to say we were pretty surprised to see the Sony WH-1000XM4 hit a new all-time low price of £180 at Amazon yesterday. But what if I were to tell you I've spotted the price for the midnight blue and silver finishes has dropped even further, to just £171?