Well, as it turns out . . . I've "ruined" my Mother's Day surprise (a SWC 120 Cone) and hubby had to spill the beans.
At least I told him what I was planning to do when I said I had to "run out for a bit to get something for the aquarium Monday evening."
I'm sure the SWC will be great, and hopefully someone else is able to snap up ElGuappo's Vertex!