Guys, I'm looking to add one or more of those 2x5.25" bay to 3x3.5" disk cages to my main file server, which is a CoolerMaster Centurion 534 case, which has tabs in between each 5.25" bay to help hold things in place. I thought about the 3x5.25 -> 4/5x3.5" expanders, but since I have four free 5.25" slots, it makes more sense to use a pair of 2x5.25"->3x3.5" cages. Plus most of the larger expanders won't work with tabs in the case. Part of my criteria is: cost, quiet cooling fan, durability of sleds, SATA III support, abitily to replace the cooling fan if it's too loud. So here's my top four choices. The IcyDock is the most expensive by far. Not sure I'd go for it... sorta leaning towards the iStarUSA models. The Norco has no reviews on newegg, so I'm leary of it. iStarUSA BPN-DE230SS-BLACK 2 x 5.25" to 3 x 3.5" SAS/SATA Trayless Hot-Swap Cage - OEM http://www.newegg.com/Product/Product.aspx?Item=N82E16816215240 iStarUSA BPU-230SATA-BPL 2x5.25" to 3x3.5" SAS/SATA 6.0 Gb/s Hot-Swap Cage - Lockable http://www.newegg.com/Product/Product.aspx?Item=N82E16817121912 NORCO SS-300 3 Bay 3.5" SATA/SAS Hot Swap Rack Module http://www.newegg.com/Product/Product.aspx?Item=N82E16816133050 ICY DOCK MB453IPF-B 3 in 2 3.5' SATA I & II Hot-Swap Internal Backplane Raid Cage Module http://www.newegg.com/Product/Product.aspx?Item=N82E16817994052 And a fall back model which should work just fine in my case, and which is really cheap, but takes up three 5.25" bays to hold 4 drives and isn't hot swappable... COOLER MASTER STB-3T4-E3-GP 4-in-3 Device Module Hardisk Cage http://www.newegg.com/Product/Product.aspx?Item=N82E16817993002 Thanks, John