One of the coolest spring reverbs I ever heard was Craig Anderton's Hot Springs sold by PAIA.  I don't care for spring verbs in general, but this is a good one as springs go.  I've been using digital verbs since the mid 80's and I was happy to say goodbye to springs.  One of the best plate verbs I've heard to this day is found in the Lexicon LXP-1 digital processor (circa 1989).  It's every bit as 
sweet as the real plates I used in the early 80's.
Here's a link to Anderton's spring project still sold by PAIA
PAiA - 6740K Hot Springs Reverb Kit, Hot Springs Reverb, 6740K