Here are my thoughts on each of the Blues Brothers as I call my collection lol

Bose QuietComfort — Pros: good bass, quiet and aware modes solid, very lightweight, love the physical buttons, small case, super comfy Cons: Feels flimsy and cheap, creaking headband while wearing headphones, ratcheting headband, resets to Quiet mode when turned back on, treble harsh

Bose QuietComfort Ultra Gen 1 — Pros: Feels pretty solid, sliding headband, immersive audio is fun with live music, even better quiet and aware modes than QC, small case, super comfy Cons: Weird button setup, volume controls are awful so I use my phone to control volume I use these the least. Only for live music

Sennheiser Momentum 4 — Pros: Lost of slam and impact with strong bass even without bass boost tuned on, solid build quality, intuitive controls, awesome app, sound the best of all 3 headphones, crazy long battery life Cons: Transparency and noise cancellation not as strong as Bose, not as comfy as QCs, ear cups are smaller than QCs. My favorite and most used pair. Love that “Sennheiser signature sound!”