After getting the new reverbs, I found that I don't really like the spring reverb. I think what I don't like is that it is so different from the reverbs I'm used to. There was just a large difference when changing from a slot with a hall reverb to a slot with the spring reverb.
My "hack" is to use the spring reverb before the stack and then use my "normal" reverb in the reverb slot. That lets me get the "sprongy / vintagey" kind of sound of the spring reverb, but then the same sonic space treated by the second reverb later in the chain.
Anyway, thought I'd share in case that is useful to anyone else.
I would be very interested in anyone elses spring reverb settings if anyone has come up with something they like and would be willing to share.