I doubt if he's running over 100 psi..... most any hose will handle that.
Flexibility is helpful, some of the plastic hoses are like pipe when you try to coil them.
Those plastic hoses that are made like a 4 to 6 inch diameter coil spring, look like a good idea...... but they get damaged easily and are only about a quarter inch I.D., which is too small for some tools.
If you are going to do any welding around them, rubber hoses stand up better.
