I like the stainless steel spigot but with stuff like the cooler or perhaps the crocks you can change the output setup.
I have a few of the 5 gallon round coolers and most come with a push to dispense valve that shuts off when you release it. Makes it hard to wash hands.
Unscrew that setup and wander to lowes or whatever and you can add on whatever.
If I actually stop and read the link on that stainless steel setup I expect the threads are mentioned as well, but I just stuck it on a wishlist to look at later.
To some extent I would also consider making a screw on top that you setup to allow you to use a hand pump to pressurize with air and then get water dispensed out.
There was a thread in here on doing it to a 2.5 gallon or 5 gallon scepter or lci knockoff. Nice thing about this, no valve leak to let water out over time.
But if poorly made as someone already mentioned the air can leak out and that just takes the fun out of it.
Overall, I like the big stainless steel pot and stainless steel spigot. Easy to clean out if you wish to do so. And should last forever unless you squish it or something.