RE201 Space Echo
Vermona Retroverb (more lush sounding spring than the Space Echo as the 3 springs are all about twice the length of the springs in the Roland)
Alesis Quadraverb (for the old school FSOL reverbs)
I can't seem to get anything nice out of the Ableton Live reverb, I suppose I need to work harder on it.
I got Breverb recently but the tech support are still trying to find out why I can't get the download links to work so I don't know what that's like yet.
Wave Arts Masterverb a lot of the time, though if I go into Logic I'll use Logic's built in plugs.
Here's a common trick, use two reverb send channels, one for a close upfront short reverb with a tight timed predelay for initial reflections, and another one for background and longer reflections. The upfront short reverb will help your sounds (percussion, say) sound as if they are coming from a similar space, while the longer decayed background reverb will help with spatial placement. The hardest part is balancing the different send levels with the ultimate return levels on the reverb busses.