i fully reccomend the Grado.
Although downsides to the grado is that its open back, so sound would bleed. so it isnt exactly every day carry.
and the cable isnt detachable, which sucks. and for me, the headband is abit shit, but usable.
I have heard the marshalls before, its ok in sound. its one of those bass cans which is popular for the mainstream.
honestly, if you are taking your headphones out into the public, i would reccomend the koss ksc75 in comparison to both of them (if you would like a portable open back). but if its just indoor use, then grado would be my personal pick.
but the ultimate reccomendation is to actually get your hands on it and try it for yourself, and see which fits your needs. But i would personally choose the grados.
btw, the koss ksc75 may be $15, but it sure as hell sounds better than most 100 dollar headphones i have tried (personal taste btw)