Back in October of 2007, Cool Tools recomended Melnor Quick Connects for garden hoses. The quick connects are similar to quick connects used on air tools. I am a big fan of these quick connectors and I use them on all my hoses. The only problem with the ones recommended by Cool Tools is that they are plastic.
There’s a number of problems with the plastic connectors for which I don’t recommend them. If you leave them outdoors all year round they get brittle and they don’t take a lot of abuse like when your dragging your hose across the cement. Instead I recommend the brass connectors such as the ones made by Camco.
Another issue with these things is they tend to get dirt in them and expand and contract with the weather. Sometimes you have to bang on them to get them to move again, try doing that with a plastic part.