Upgrade for gigabyte 3d aurora worth it?

[liquid ideas]

Hi everyone

Im building up a new i7 920 based system as my current one is starting to show its age. I have a gigabyte 3d aurora aluminium case which is perfectly fine but am wondering if its a worthwhile move to use a CM Storm Sniper Black or HAF 932? I'll be using air cooling (megahalem) with moderate overclocking so would like to know if these cases or any others would be worth changing to.

Any thoughts on the matter would be appreciated.