I was one of the prople that wrongfully thought that Grado had put different pads on the e serie.
The thing is that, on the models that have a larger driver, the pads are stretched, wich makes them look a bit different, and also, the stretch causes the foam to have a different density, wich can alter the sound a bit.
I do want to say that, I am sorry for any misunderstanding I may have caused.
No apologizes needed. We're all trying make impressions and make sense out of what we hear and what we like and don't like.