It depends on what you're looking to get out of your ring. This is a great resource to learn about the pros and cons of our metals: manlybands.com/pages/a-mouthful-on-metals We'd also just mention that all of our rings automatically come with a silicone band if that has any weight in your decision, you can sort of get a two-for-one in that regard. Silicone bands are great to wear for someone who works a manual labor job where safety is a concern or when they're at the gym and want more comfort.
