I newly started mining on Zotac GTX 1060 6gb AMP Edition 7 days ago. it has Hynix inside and make me confused

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tried with msi afterburner but it crashes or restarts nicehash excavator. so installed FireStorm and using it since 4 days with no problem.
ETH: Core: +150, Memory: +920, Power: 62%, Temp: 60 max, Fan:80%, 20.7 Mhz/s (stable with nicehash, nanopool and Claymore)
could increase memory to +935 and power to 65, which increases more heat like; 70
Zcash: Core: +160 memory: 0, Power: 80%, Fan: 80% Temp: 66, 282-290 sol/s
i think speed depends on acceptance...
core can increase to +165. and power to 90% 300 sol/s with not profitable sol/w.
thinking to get one more card so any suggestions ? PNY 1060 6GB OC GAMING Edition or Gigabyte Windforce OC or MSI GTX 1060 6GB OC V2 ?