I like the M40f/s.
Just a personal observation as I haven't tried the others you mentioned, so I can't give a comparison.
Everything I read about Grado says 'they make the music sound better', which is not what I want.

I've had the M40f/s for a couple years now. I have bought other, more expensive headphones for the studio since owning them. I always grab the m40's when I need headphones. Some of the others I have really tint the sound and I don't like it.

The M50's, by same company were a big disappointment here. Three times the price and a lot of color added.


I do not work here, but the benefits are still awesome
Make your sound your own!