I get 3 Mh/s per second higher hash rate in a 9 card 1060 rig over the same rig running Claymore 11.6. However Claymore is currently producing 0.05 more ETH per month on the same 9 card rig in my 48 hour test. Big fan of phoenix though, will come back and try them on the next release.
I had similar experience.
I found with the increased hash rate from Phoenix I had many memory errors. ( Don't get them on Claymore using same clock speeds )
When I lowered the mem clocks to get rid of the memory errors I had the same hash rate as Claymore.
Then I observed that I actually got less accepted shares at the pool with Phoenix than Claymore.
So, for now I'm still using Claymore.