Frankly, I don't know about the new Novus Ordo rites, either. As I was taught, when we have a choice between a doubtful Rite and a certain Rite, we ARE OBLIGATED to choose the more certain.
This is Church teaching. And it is the foundation of the Traditional Movement. It is why we reject wholesale the entire Conciliar package -- Vatican II, the Novus Ordo, its new practices, its new sacraments, its doubtful priests and bishops, and its materially heretical popes. Why risk invalidity when we can go to a Traditional Catholic Mass chapel and get 100% certain priests and sacraments?
Are the Novus Ordo Mass and the Conciliar sacraments valid? Who cares! It's an academic question, because no Catholic who values his Faith should EVER consider going to a Novus Ordo Mass. Better to stay at home than to imbue sentimental, protestant, liberal, feminist propaganda.
I'm a practical person. Chalk it up to the Irish side of my heritage. When I observe that the average Novus Ordo Catholic is indistinguishable from his Jewish and non-Catholic friends in every measurable way -- how many children he has, his use of birth control, his language, his recreation, his ambitions, his hobbies, his dress, his politics ("go Hillary! go Obama! -- for the economy! Who cares about abortion...") his daily prayer life, etc. than why shouldn't I conclude that something is critically wrong in that church?
It's not just the smart thing to do, though. We are actually meeting our grave obligation to keep the Faith and not put our Faith in jeopardy. Are we allowed to attend protestant services? No. Why would we be allowed to attend virtually protestant services, with a few Catholic vestiges but mostly protestant, indistinguishable from a protestant service by the average layman, and which was actually designed by a half-dozen protestant ministers? Those who want to muse about the validity of the Novus Ordo are COMPLETELY missing the point. It's still filled with anti-Catholic poison! It's calculated to destroy souls. Why would you subject yourself to its destructive power? Do you think you're stronger than so many who have fallen away? That would be pride (which is ironic, since they always accuse Trads of being proud and disobedient).
When the priest has Holy Water and regular water available for baptism, he must choose the Holy Water. He can't choose doubtfully valid matter over certainly valid matter. The same goes for the FORM (the words) of the sacrament!