I prefer premade hoses, even generic premade over do it yourself hose and hose ends. That being said I do carry some SS hose and fittings with me to the track just in case.

While a hose made just for your car keeps joints to a minimun and possible leaks using generic SS hoses and adaptors means the hoses are cheaper to replace. Cost of the latter is higher due to having to use adaptors but it's cheaper long term.

I never had a true failure but did find a hose damaged/rubbed once in a while. Most times the cause was my fault for poor routing, a broken tywrap which keep the hose out of harms way, or an outside cause such as a something hitting the car due to an "off".