Those short 6" hoses wear out fast (relatively) due to the sharp bend. Miflex is a great solution to the problem of hoses cracking for this reason. HOWEVER they don't have the same tension compared to rubber, and lay differently, so that's a game killer for some.

IF you're happy with the way Miflex hoses support the SPG, I think the Miflex hose would last much longer than a rubber hose, for this application.