I've been using a prevost connector on my air hose at work for the last 20ish years. OK, I've used 2 - I had to replace my first one maybe 5 years ago.
I've got the blue body/silver release button version. As you can gather, it's been great. :xyxthumbs: Love not having to pull the collar to insert an air tool, and the only time it's ever popped a tool out is when I've dropped it/tossed it to the ground.
To bbmach's point, I bet Milton would be just fine as well - all the fittings at the end of the hardlines at the shop here look like they're Miltons, and I can only think of 1 that's had an issue (likely due to not being used very often).