too expensive and sorry, i'm not a fan of shure.
my next one would be denon c-710, though i'm already using c-560 now. do really wanna see what the main differences are.
i did try the new version of 215 before and it was quite alright indeed! but 535 and up are really toooooooooooo expensive to me la! my buying of a beyer dt-770 is really really an exception and already cost me a lot! so i'm not planning to go for anything over $1k for my next earplug, and with my experience with the c-560, i do really feel satisfied and do wanna see where the improvements are in the c-710 that make it that expensive and different from c-560!