I have tried both diapers and like both, but for different purposes. Both have white plastic shells. The Rearz Inspire +In control is more absorbent than the Dry 24/7. It has an ISO rating of 5,316ml in size Large. It also has excellent tall internal standing leak guards, a front taping panel, and a very wide crotch to accommodate large booster pads.
I found the Rearz to run a tad small and made the right decision by buying the next larger size. That size fits me very well. I have found the Rearz to be excellent for night use. It is a bit bulky for daytime wear although one could wear it with very loose-fitting jeans.
The Dry 24/7 remains my mainstream diaper for all daytime activities. I can wear a Dry 24/7, with a booster pad, under a pair of jeans and no one would notice (even if they stared at my butt).
For me, the biggest down side about the Rearz Inspire +In Control is the cost.
Cost-wise it is difficult to do better than buying ConfiDry 24/7 by the case from XP Medical.
--John