The Empress is a fantastic pedal, if I only own one reverb it would be that.
If you haven’t checked out knobs on youtube, his demo videos are some of the best I’ve ever seen (no talking! only sounds!). He demos some other pedals that I’m going to get as soon as I’m no longer a starving grad student.
I tried out a newer reverb from Earthquaker called the Afterneath that was suuuper dark, I wouldn’t use it too often but I could see it working really well as a subtle background thing, or maybe featuring it once in a set.
I’ve heard awesome stuff from eventide, too.
But for live stuff I’ve had a ton of fun with the BEAP modules in Max, especially the Gigaverb. Freeverb is not very versatile but is fun to freak out by turning up the feedback too high.