Hmm , I've heard of those high dollar hoses .
We have used the el cheapo brown hose ( more than one when needed ) for 6 years . IIRC , we haven't replaced them yet . But , I can see the one usually used is starting to fade in color , which might indicate it could be losing pliability . No leaks , so far . When it does start leaking , I'll replace it with the one not used as often and then I'll have to but another brown hose to replace the replacement .
Those brown hoses replaced the seriously el cheapo black hoses that were in the rig when we bought it . That was just after the first year .