There is nothing wrong with the ConfiDry 24/7. It is a great diaper and is my personal choice.

However, as MikeinSF has said, any diaper absolutely must fit your personal anatomy well. Otherwise, all the high absorbency and other features are wasted.
That being said, I get a
much better fit, and fewer leaks, by taping the Dry 24/7 while standing up. IMHO a snugger fit is necessary for night wear, particularly if you sleep on your side, as I do.
The next issue is the booster. I also use boosters (NorthShore Care) in my Dry 24/7 and have very few leaks. However, please do note a couple of things. 1) it is necessary to choose a booster that leaves room for "gutter" space on either side of the booster in order for the urine to run off rather than over the internal standing leak guards. And 2) if the booster, once swollen with urine is as high as, or higher than, the internal leak guards, you are much more likely to leak the next time that you flood.
A third point is that no disposable can be 100% effective for side sleepers.

That is just the way it is. Diapers do not have enough absorbent matting on the sides where the pee drains when sleeping on your side.
So, although the Dry 24/7 is as good a diaper as you can get for night use, it cannot be perfect. Wearing plastic or PUL pants over your diaper is a must, especially for side sleepers or anyone who encounters leaks at night.
Finally, as I hate waking up in a wet bed, I changed over to cloth diapers at night, as have many here in this forum. Since I changed completely to cloth prefolds at night I have leaks on less than 1% of the nights - not bad.
--John