Two weeks ago my 15cm Miflex hose burst when carrying out a pre dive check (I know I know Marmite)
It was the original hose with metal ferrule"s and no rubber covers.
Sent it back to Miflex with mentioning "fit for purpose". Replacement received within five days, the new thicker and more robust hose.
Well done Miflex, discovered customer service after years of denial that there was anything wrong with their product.