Good information - All those so called SS wrapped supply lines from china should be suspect, because you really do not know what is inside - probably just a cheap vinyl tube.
Its no mystery how to build a great hose. The best washer line would be a 3,000 or 4500 PSI hydraulic line. I have some on my excavator operating at 4500PSI for 15 years under incredible strain and shock inside and out. And you can have them made at any auto parts store in a minute- and quite flexible also.... Too bad they don't have garden hose ends for them!
http://www.surpluscenter.com/sort.asp?catname=hydraulic&keyword=HHNB
On edit, I think I really will use hydraulic hoses on the washer. Just add an adapter, have a 2950 PSI safety factor, and save a bit of money over the cost of the floodsafes.
http://www.surpluscenter.com/item.asp?item=916-1496&catname=hydraulic
And here is a beauty for the dishwasher- 15 bucks and 12,000psi burst!
Try and find that quality at home depression.