OK listening to some Whitesnake, Here I go Again and Fleetwood Mac, The Chain.
The MTW3 sounds cleaner with both songs. The AZ80 sounds a bit further back in a concert while the MTW3 you closer to the front row. Guitars and cymbals have more crispness and edge on the Whitesnake song. Consequently I prefer the MTW3 for Whitesnake.
For Fleetwood Mac, The drums sounds a bit less hard hitting again as if I am a bit further back, but the song also feels more cohesive and immersive on the AZ80. While the MTW3 is just more detailed and harder hitting. But when the bass line kicks in half way through the song I prefer the AZ80 presentation more.
BTW I also tested the XM4 with these 2 songs and honestly it just falls behind. Cymbals get lost, guitars lack any bite, it sounds muddy and distant. If I use the concert analogy, the XM4 would be like sitting in the cheapy seats...
But if I was not a crazy person who buys expensive stuff just to see how it sounds, or could test this stuff out somewhere. If I already owned either MTW3 or AZ80 I would not rush out and buy the other product. While A/B testing shows the differences these both sound so good, I could easily just live with their sound.
So if you owned neither and like a bigger slightly vague sound with lots of atmosphere go AZ80. If you prefer a harder hitting more detailed in your face sound the the MTW3 would be the better choice.
Outside of the musical abilities. I find the MTW3 more secure in ear and the AZ80 slightly more comfortable but at the cost of being as secure. I have jogged with the MTW3 without having to touch them. I have not jogged with the AZ80 yet but am pretty sure I will be adjusting them.
The AZ80 has better ANC and Ambient bit not by much. The MTW3 on the other hand has one of the better wind settings so suffers from wind a bit less than the AZ80.
Hmm, as I typed away Kansas, Dust in the Wind started to play and it sounded amazing with either TWS, slightly softer and grander on the AZ80 and more detailed and clear on the MTW3...
Have to say I will have to make a choice soon as my wife is going to flip when she finds I bought this new pair. The XM4 is getting spanked so I think it's going away. Will have to do some testing with the GB2P next. But the fight between the MTW3 and AZ80 is going to be a close one! I think they both sound amazing and it's going to be hard to pick only one. Early leaning is the AZ80 because I like that grand sound but when I start listening to harder rock the MTW3 starts to take the lead...