That's difficult to say since the bag is black.
Honestly I think they're both fine and its more of a matter of personal preference and style.
The gold pops out more against the black while the silver is a little more muted and casual.
You can look at the bags and what hardware they have in your current collection and see:
1) Which combos you tend to reach for more often?
2) If you wish to have something more different that what you already have?