Sorry if it's been suggested, but the quality of the ridge venting is as important as the venting itself. Like said, depending on the configuration of the house and the wind it sees, you can have problems with ridge vents or any vent that penetrates the roofing.
I have some inlaws that live in a huge, newer built home. One with all kinds of peeks and valleys to the roof. They have one area in an unfinished upstairs room where water comes in from the ridge venting when the wind and rain is just right. I suspect they have it going on elsewhere, but it hasn't presented yet through the drywall that I've seen.
If you don't have nice wide open soffet venting, any roof vent is pointless.
I have some inlaws that live in a huge, newer built home. One with all kinds of peeks and valleys to the roof. They have one area in an unfinished upstairs room where water comes in from the ridge venting when the wind and rain is just right. I suspect they have it going on elsewhere, but it hasn't presented yet through the drywall that I've seen.
If you don't have nice wide open soffet venting, any roof vent is pointless.