Of course the taste for every person is different, and for me the bass with ANC off and bass setting in "neutral" position is very satisfactory. This is how I listening 80% of the time my 5909 (the other 20% is mix of ambient or ANC on with bass in "neutral" position always).
For curiosity, after reading your post, I test the 10 bands EQ from iTunes (Apple Music now) in my MacBook Pro and is working perfectly with the 5909, this meaning that I can changing the sound if necessary, but I never use this EQ.
As mentioned above, I can also EQ the sound, just not accessing that extra bass that ANC seem to be able to generate. Not saying that max bass is always preferred, and of course what is "good sound" is highly personal