I bought the most expensive brass hose fittings available. They are Neta brand.
There's a knurled ring that clamps a plastic wedge on to the hose. It is impossible to tighten the ring enough to stop the hose popping out. I can't hold the hose firmly enough, and the other end of the fitting will break if too much force is applied. I know this from experience.
There is another type of fitting called a barbed-tail hose fitting. It has a hose clamp supplied that looks like a Jubillee clip. That is better, but still not good enough. The hose will still come off the fitting. When the Jubilee clip is tightened it twists sideways and cannot be kept straight.
What is needed is a long tail which is narrower where the clamp goes. And I am thinking of making a decent clamp, the likes of which I have never seen anywhere. It will have two bolts that can be tightened as much as I want. I can clamp that on the fitting and discard the useless knurled ring.
Why do I have to redesign ordinary products all the time to get them to work properly? I would phone Neta but they seem to be in Australia, and nobody in my country seems to make anything that might have a slight chance of working.
I will admit that the water pressure around here is rather incredibly high, and most of you are probably not used to that, if you say that you don't have problems with hose fittings.