Logic Pro Expert have reviewed R4 and we have to say we are pleased that they get what we were trying to achieve in creating R4. It is an especially helpful review for those who use Logic Pro X.
"If you are new to the brand, R4 would be my first choice of the four. It does everything the others do, and more. Exponential Audio reverbs feel like driving a fully decked out Cadillac. If you are into reverbs, you owe it to yourself to check them out."
The review is comprehensive and goes into detail, it is especially helpful for those who own Logic Pro and are used to the included reverbs PlatinumVerb and Space Designer.
Read the whole review of Exponential Audio R4 here