I currently hold three items: Sennheiser Momentum over-ear, V-Moda M80, and Audio Technica EW9. Yes they are all great, but over the time I got tired of listening to the bass-heavy cans. Also I recently found my major music taste shifting from Pop (especially J-Pop) and classic rock to classics and opera. M80 is my special can as I stepped into the audiophile world with them so I am not willing to let them go, and I also won't let the EW9 go as they are just too convenient that I can carry them anywhere to have a pleasant short listening session (although they don't isolate well, so I am not using it very often). So I am considering side-grading to sell or trade my Momentum for a pair of cans that have an emphasis on details and treble. However though I absolutely love DT880 and K550, they are just too big for portable use. I tried K545 but the bass was overly aggressive for me. There is nowhere for me to audit some other cans that I would love to check out (i.e. T51P) in the town.
Would you please have some suggestions on which one to get? Thanks!