If you expect the different to worth $500, then no, it's not that worth it.
But on the other way, the 11 definitely an upgrade from ESW9, it's just simply sound cleaner through all spectrum, more detailed, better separation, less bloated bass with better textured, and also more spacious soundstage.
It doesn't has "very" melow midrange ala ESW9, it's a bit more neutral but still maintain the sweetness and smooth ala ATH.
Unfortunetly not 



























