Start off with this review of the Antec TX1088AMG at Overclockers Online.  At 35lbs, it’s a cooling heavyweight, with 1 120mm fan and 2 80mm’s, plus an optional 92mm CPU duct.  If a new case isn’t on your list, how about some greating modding stuff, or a nice multi-function panel?
“As you can see, there was a dramatic drop in temperatures when I shifted cases. Over 10 degrees Celsius in the load temperatures! Despite having one fan, we can see that the CPU Cooling duct greatly improves air flow to the CPU even if a fan is not installed. There was also a 5C drop in the hard drive temperature in both states. Not a bad change if you ask me.”

Here are some more Cases & Cooling reviews from around the web:

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