Never heard of brux barrels. Are they better than the others mentioned?
I am going to disagree. Brus, Bartlein, Boots O are all cut rifled. That puts them in a class above button (on the average)

And nothing wrong with button rifles, that's my choice, but the cuts are stress free, hand fitted and lapped and that is what the hard core top shooters use.

I think of them as the Ford GT40 of Lemans fame.