This 3AD has driven me to listen to my MDR V-300 another time.
Well, they cost about 40 euro, here in Italy, but their value is much worse.
I think truly that this is one of the worst sounding headphone ever made. Especially for the overbloated bass (that's not deep) and the very resonating mids that have a honky sound that can't compare no way with the "reality". No highs too, only sometimes they brake up on cold cimbals.
Unfortunately, if someone (not head-fier) goes to a shop and want e cheap, headphone, tipically sees that Sony and thinks "wow, they're Sony, they have to be good sounding and good quality, etc etc", and he buys it, and probably he will listen to it and "appreciate" because of this bassy sound. This is very misguiding. Because for the same price you can buy a Senn HD201, or a PX100, for example. If you listen to another headphones (every) after listening the MDR-V300, the headphones will seem without bass and only high-sounding.
And Sony knows how to make good headphones, also cheap (remember the little supra-aural in the '80, or the MDR-44/64 of the '90?), I can't understand why they make this crap. More respect for the music, please. It can be done at every price.
Goodsound, you can do a very big step-up without spending much. If you are in USA it will be a good idea to try a Grado Sr-60, probably the cheaper and best way to achieve a near high-end sound, especially in timbral accuracy.
Andrea