Greg and Rich, Thank you for posting links to these apps.
Cam, I have my collection on an Excel spreadsheet too. I have separate pages for each manufacturer, but they only total 160 items.
With 160 items, I do a bit of looking at times, and agree a database would be much more useful. I guess the time to do it is before I get a lot more, which I don't really plan to do having just retired recently. However one never knows when I could inherit a long lost uncle's large collection. Not.
To answer your question Greg, I don't think it is a rabbit hole at all. I think a lot of us are interested in database options!