I don't normally regret parting with bikes too much, but the '88 Sirrus I got a few years back on FB marketplace for $50 is pretty much the top of that pile. Even recognizing that I have other, arguably nicer bikes that duplicated its ride and its purpose, I still kinda miss it. It had a magical kinda ride quality, as if everything just wound up placed and set exactly, precisely right for an ideal road experience.