Most macro line is only rated for about 300 psi with a burst rating of about 900psi, which is ok for low pressure guns running at 250psi. You can get good macro line, but you have to know what you are getting. It can be in the 625psi range with a burst rating of about 2500psi. Some even higher than that. The good macro line tends to be a bit stiffer and harder to bend. Even the good macro line can get compromised if it gets scratched or kinked.
Except for the Automag in front, its usually the man behind the equipment that counts.