All these days later, and build #2 is still #1 because survivability is a non-issue above 3k mana and dps is moar
0.64% dmg has virtually no chance to reduce the number of nova required to kill.
See, increasing dps is not linearly increasing your clear speed.
It’s a step in thresholds.
On the other hand, the extra radius added to the outside limit of your static area is exponential. This will reduce your number of cast at all time.
So build #1 is a bit better offensively also, if you can interpret the data correctly.
They’re very close indeed.
But there’s a good advantage of using viper vs ormus in tankyness, if the faster clear speed from viper is not enough to convince someone already.