I agree with this. Whilst I did get my wife the ATH-50xs, I find the colour not to my liking after an initial period of listening. Bass response is great if you're into that though.

I personally use the ATH-MSR7NC (music) and ATH-ADG1x (music/gaming/comms) at home, and the ATH-ANC9 at work. The ANC9s are great for the work environment, and far easier on the ears in terms of avoiding tinnitus whilst blocking distracting noise than the 50s.