I'm going to go ahead and buy some panniers for my bike. I've decided to get the metal ones, but am not sure whether to get this kind:

http://www.amazon.com/Wald-13-1-2x6-...941148&sr=8-34

or the collapsible kind:

http://cgi.ebay.com/TWO-New-SILVER-R...QQcmdZViewItem

Do the collapsible ones rattle when they're closed?

Any advice? Thanks!