Buy enough so you can change every section every couple of years, if looks are that important. Plenty of 'our' cars have gone up in smoke over the years because those cheap hoses have split. Personally, I would not take that risk. Use so-called ordinary black fuel hose, or braided hose, for regular use and keep a length of the Cavis style for the kind of car show that requires several days of cleaning, scrubbing and polishing prior to the event, or the day that the assessor from Bonhams pays you a visit.