Product review (5 stars): There might be a better alternative for just $20 more
I've had these hoses on my washing machine coming up on 10 years, never shut the valves off and they have never leaked or burst.  But - obviously, nothing lasts forever, and if you Google these hoses you won't be quite as content with their safety over time, although that contradicts my experience.  So, it's time to change them, and in looking on the Floodchek.com website from a company in TN which makes a $40 set of industrial quality hoses which they claim have never burst and are warranted for 20 years, and they give many the names of many high end properties which use them.

Not sure what I'm going to do, but given the risk compared with just another $20 I'l be looking at these very seriously.