For some reason "On My rigs" Phoenix is faster. ( not a lot ) but still faster.
Btw, what's ur rigs?
I tested on mostly 1060 3GB with only two RX Polaris based.
Mostly AM3 based, so very very weak CPU.
I have 6 RX-580's. 4 have 8gb mem and 2 have 4gb mem.
4 run between 30 and 31 mh/s
2 run between 29 and 30 mh/s
They 2 Gigabyte, 2 ASUS, 1 PowerColor, 1 Sapphire PULSE
Memory varies between Samsung and Hynix