Is there any reason to choose a 64bit debian over a 32bit debian instance on Amazon EC2?
64bit Apps simply take more memory (which is crucial & has a high premium in VPS & Cloud servers).
Are there any other things that I should consider in making this choice?
64-bit apps will use the 64-bit instruction set which carries a great deal more optimisations than default x86 packages Which can result in better performance as compared to its x86 counterpart.