I bought both 3Meter poly recoil and 4m poly recoil hoses.
This 3m Hose has a thicker and slightly stiffer house housing. The Female connection points have bend restricters. In colder climates the hose may be slightly stiffer then warmer. For reference I live in a warm climate my workspace gets up to 80 degree F. The house was a little stiff for my tastes at first. After one 8 hour day of use the hose still retained its intergitiy was less stiff and way more comfortable. It still to this day does not bend or fold upon itself causing pulsation.
The 3m poly no name recoil hose I tried without bend restriction was thinner and more flimsy. After two days of use that one bent upon itself at the connection point. Spray gunner may have switched the 4m hose with a new one the one I bought cost around 8$ one I bought was around 8 dollars and just didn't hold up.
Right now this is the best recoil hose I have used.
If you are considering straight style hands down the Grex ultra flex airbrush hose is in my opinion the best investment you can make this product is far more affordable and would be my second pick for highest quality long-lasting hose.