Just jacked mine up to 75 watts and it did fine. Hotter than I like but it seemed to keep up okay.
When I go higher than 60 watts I take a shorter pull but find flavor and cloud production is outstanding.
I have one tank I have vaped on at 125 watts. I thought I was crazy but it is a great vape! Outstanding flavor and the clouds last for days. In that tank I have fused claptons, .12 ohms, regular vape at 85-90 watts. It is all that vaping should be.
But... I want to get some use out of my Crius and have it with a different flavor juice so I can have multiple tanks available depending on my mood.
I am not satisfied with the stock coils that come with the Crius. I get good flavor but the wick burns too fast.