Compared the Momentum 5 with the Bose QC Ultra 2 and returned the Sennheiser, though it was close. Liked its punchy bass, strong noise cancelling, comfortable plush cups and roughly 60-hour replaceable battery, but found the mids and highs lacking even with EQ, the stage narrower, and the cups touch the tops of their ears.
“The Sennheiser Momentum 5's are definitely tuned flatter out of the box but man they can move some air. They have way more prominent bass and sub bass than the Bose.”