GTX 1080 Ti Strix for max Clock OC at 2,088 MHz.
EVGA 1080 Ti SC2 has the highest Memory OC at 1,553 MHz.
Don't apologize for opinions, because you're asking about performance.
Opinions don't matter when regarding performance, only numbers.
Strix wins in Fire Strike.
But in Fire Strike Extreme, the MSI Gaming X wins out.