UPDATE - July 12, 2011 - I created a Wiki article to allow us to pull everthing together. To add you review, go Here, click the link down under the heading "Benchmarks..." and contribute!!
Update - March 2015 - http://lime-technology.com/forum/index.php?topic=12405.msg359211#msg359211 - Looks like SM is now including blanking panels installed in the trays. Very nice.
I am looking at 4 of the more popular 5x3 cages used. The Icy Dock MB455SFP-B, the Norco SS-500, the SuperMicro CSE-M35
I received the last swif2 fan installed it in the remaining caddies.
I also swapped hard disk around between top and bottom caddies to place all the cooler drives together in the top caddie (circled in green). I used the NFr8 fan for the top caddie, and slowed it down to 1300 rpms.
For the other drives circled in black (the hottest ones), I used the swif2 fan I used previously, in the same caddie, with the same drives. Interestingly temps with the same setup in that caddie are higher after t