Those cymbals are nice, huh. I don't think it's something that's overly obvious when compared to better kits, but when listening side-by-side they seem to be "crystal clear" to me.
FWIW, the ZP1 is the Zyldjian Pack 1 (there are other packs available). After I installed regular Eco the ZP1 showed up as unregistered, even though I had been using it in Eco DV. So I hadn't tried the cymbals outside of Eco DV yet. Then again, one of the things I wanted with this was the ability to pick from a wide variety of cymbals all at once. So I'll probably just continue to use DV for that reason. Hard to beat the cost for what it does!