I've in the market for a new case and I noticed that Chieftec is now coming out with aluminum versions of their cases. In this ad at Directron they claim that it releases heat 3x faster than a steel case. The aluminum case costs $84 vs $59 for a steel one (both use the same plastic front bezel, so looks ar not a consideration here). So I'm wondering, is it worth it to go for an aluminum case? What exactly does the faster heat release mean in practice? Will my CPU run cooler in an aluminum case than a steel one?