Ever wonder why everyone has more than one reverb? Even SONAR bundles more than one. It's because each has individual quirks that might it better suited than another for a specific application. There is no single "super reverb" that does it all (e.g. accurate emulation of physical spaces or vintage hardware, regenerative feedback, extensive modulation options, advanced filtering, stereo field placement, separate L/R processing, etc.).
Whichever reverb is ideal is therefore largely dependent on how you intend to use it (gentle cohesion, smoothing vocals, increasing live-ness of instruments, special effects such as reverse reverb, matching a room, widening, spacey effects).
FabFilter's new reverb, Pro-R, looks interesting because it has a few tricks that are unique. But it'll take some convincing before I buy it, simply because I already have sufficient options to meet my needs.