As a score-writer working in lots of different genres it's always important to have a flexible reverb plug in. I have no experience with the original unit at all but have to say that I LOVE the sound of this reverb.
It can go from realistic small room reverbs to infinite shimmering plates, and it is the latter that really caught my ear.
Dial in a long reverb decay and it really shines - it reminded me of the way the space echo saturates, and seems to work with every production I work on.
So there you go - no overly technical review, it just sounds good!