it's inevitable that after the initial wave of gushing praise for the latest-and-greatest, the more critical evaluations (as well as outright haters) come forward. personally, having spent more time with the zs5 i remain a fan, if not a cultist. as silverears states, it's not a highly transparent/resolving piece, and i still feel low end isn't seamlessly blended into the rest of the spectrum. however, they pass the most important test, which is how fun they are to listen to--i find myself grabbing them more often than my numerous other, more analytical/audiophile-tuned iems.