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