Bang & Olufsen Beoplay HX (Top AirPods Max alternative)
That price makes it a direct competitor of Apple's AirPods Max, which are heavier at 385 grams versus the HX's 285 grams. I don't know if the HX headphones are more comfortable than the AirPods Max, but I found the two models pretty equal in the comfort department over longer listening sessions, and these do feature the usual swanky B&O lambskin-covered memory foam earpads.
The HX has custom 40mm drivers, Bluetooth 5.1 and support for Qualcomm's aptX Adaptive (that includes AptX HD) for high-resolution wireless streaming when you combine an aptX-enabled Android device with certain music-streaming services like Qobuz.
Their sound measures up well to the AirPods Max's sound, overall well-balanced, with deep, well-defined bass, natural-sounding mids (where vocals live) and inviting detail in the treble. If you want to push the treble or bass, you can tweak the EQ in the Bang & Olufsen app for iOS and Android and give the headphones a warmer or brighter profile.
While these are expensive, they offer more accurate sound than the Sony WH-1000XM4. Their noise canceling is also very good and voice-calling capabilities are also quite solid. Additionally, they offer multipoint Bluetooth pairing so you can connect them with a smartphone and PC simultaneously (Microsoft Swift Pair-enabled for Windows machines) so you can easily switch between the two. (The Sony WH-1000XM4 headphones also have this feature.) Battery life is rated at up to 35 hours with noise canceling on and 40 hours with it off. Those are excellent numbers.
Earlier Bang & Olufsen models included a soft case (a pouch really), but the HX headphones come with a hard case. As I said, they're expensive, but the small improvements over earlier flagship Bang & Olufsen noise-canceling headphones help make the HX headphones a worthy alternative to the AirPods Max.