My experience with braided stainless is that they flat out don't last like old rubber hoses even when used with fuels that have NO ethanol. I'm sure the ethanol only compounds the problem.
On my drag car, I had to replace the 12" fuel line from the regulator to the carb inlet every 4 years religiously. This was in a vehicle that only ran during the summer months and only used high test, pure gasoline race fuel. Fortunately I could tell when it was going because I ran the fuel pump independant of the ignition. I could pump up the fuel system prior to firing the car and like clockwork, ever fourth year it would start showing drips under the length of hose. One year it was so bad it was squirting out of a half dozen pin holes all over the engine bay. If I was cranking over the car at the same time, it could have been catastrophic.
Any hose I use now is PTFE lined. It is more expensive, but I have not had any issues with it either. Then again, I try to seriously limit any hose lengths on my car anyway.
