I agree that this is mostly opinion. I find im falling in love with the triAxis, because of the three different volumes I can use.
I keep my output at 3. But at the same time, I am cranking my 2:90. Its normally at 1 oclock, on both sides (Yes I am using 2 Cabs).
I personally prefer Amplifier distortion. Pushing the pre-amp tubes too much sounds too sizzly to my ears. I like the grind and the bark of 6l6s, LOUD.
The Triaxis is so versatile I reccomend trying out multiple different settings. Try EVERYTHING. That way you can know what you want better.