Just played today and it was really good!!!
As expected, I have better spin and wider sweetspot with sgut cross tension lower than poly main. And so GOOD ball pocketing!!!
Also as expected, I have more free power at 21/20 and little better control at 22/21.
I have to make a choice now... Will test it again on Saturday but I think 21/20 is a really good tension for what I'm looking for.