Cool, thanks! I'll look again in the previous pages to catch up with this discussion.
Sorry, it wasn't in this discussion, but on bitcointalk.org somewhere. You'll have to have a google to find it! Regardless, I think they're still working on full zpool integration into nvOC. But anyways, I don't know anything as I don't use any of these services.
So there is an interesting comment in that thread about the tests being done while altcoins were rising and with zpool/mph lagging in conversion they performed better, vs nicehash "instant" conversation to bitcoin. In a down market, nicehash may get better results (?) ...something to think about.