Thanks for all your suggestions and opinions. You're the best
I finally had the time to put the Terry Fly Ti on my bike last night (and I even remembered to put tape on the rails so they don't get scratched so I can return it if that's what I decide). Took it for a quick 22 miles before dark.
At this point I'll give it a
9! Once my back side get used to a firmer saddle

(which the Serfas is not), maybe I'll up that rating to a 10.
After last night the best I can give the old saddle is a 4.

I never realized just how uncomfortable it was.
I'll do more miles on Saturday and Sunday before I make my final decision, but so far it is a keeper.