The answer to 'which is better supply line or' is that both supply lines and braided stainless steel hoses have their own advantages, and the best choice depends on your specific plumbing needs and preferences. Supply lines are typically more affordable and easier to install, but they may be less durable over time. Braided stainless steel hoses are more robust and resistant to leaks, but they can be more expensive and may require more specialized installation.
When choosing between supply lines and braided hoses, consider factors like the age and condition of your plumbing, the level of water pressure in your home, and your budget. If you have older plumbing or high water pressure, braided hoses may be the better choice for their enhanced durability. However, if you're on a tighter budget or prefer a simpler installation, supply lines can be a more cost-effective option.