Product review (4 stars): Much better than rubber hoses, not so sure how it stacks up to metal braid ones
This is a very interesting item to review. On the one hand, at first, I wasn't exactly sure that these hoses are better than my current metal braid ones. (And let me say from the outset, if you are using regular rubber hoses, you DEFINITELY need to switch to metal braid or this kind of Flood Armour hoses instead, to avoid potential leak damage.

Good points:

Right angle connection to the valve inlets on the back of the washers.
Control valve that will kick in if there is a leak.
Once I had it on, there were no leaks and it seems quite sturdy.

Mixed/iffy aspects:

It seemed that the stiffness of the hose, made it difficult to maneuver the hose end onto the washer threads. Eventually by kneeling on top of my washer, I got a good angle to get them on straight. The hose ends did want to kick out given the stiffness of the hose.
The other end of the hose, where it connects to the supply, is rather large in diameter to allow for the safety valve. I did manage to get it on my supply box connections OK.
The hose seems to be slowing the flow of water into the machine? I will keep an eye on this.

Another thing to note:
 The box says to avoid the use of a wrench to tighten the hose end. I found it necessary to use it gently given the angle I was working at and a sprained wrist. Just go very lightly.