The village website listed the hardness as 25 fh (14 °dH). Ca 67.4 mg/l; Mg 10.09 mg/l; N 5.3 mg/l, with a Ph of avg. 7.58.
So I guess the well water fertilizer should be chosen.
Thanks for the help everyone. I wasn't sure why there were different ones and this clarified things.
(The rain barrel won't be set up until next year, it needs a foundation since we live on a hill and there's very few flat surfaces, so I'll order the other one next year.)