Have either of you actually used the No-Spill trademarked brand spigots, or are you using "no-spill" as a catch-all for the so-called safety spigots that come in a new variant every year?
There's a huge difference. The brand No-Spill is phenomenal - my only issue is the inflexibility of the spigot for transferring to an automobile. Using these for small-engine stuff, though, is phenomenal, and the only way you're going to spill is if you're using it wrong.
I don't know the brand and manufacturer of every gas can I've ever used. lol. Like like you said, there are so many variants on the market it's hard to keep track. And honestly, I really don't care. lolol. What I DO know is.... There was/is nothing wrong with the old style of gas cans (with vents and standard spouts) that were used in this country for over a century, and probably still used in other countries all over the world to this day. If people like a certain type/style of gas can, feel free to use it. I will use what I like, too.