The only time I've heard an EMad with the large ring sound good to me was a metal drummer using a new Renown kit with the stock heads, no additional damping and really hitting it.
I've gone back and forth between the two on different kits and for some reason each kit sounds better with one or the other. My Pearl Sessions sounded better with the SKII, the Masters Customs I replaced those with liked the EMad with the small ring. The SK didn't work on them at all, dull and boomy at the same time. A Pacific CX maple kit liked the EMad as well, although it sounded good with the SK. But my new Renowns sound much better with the SK than the EMad they came with. They sounded nice and open with the foam ring removed and hit hard, but the SK is much more versatile.