iStarUSA D-406-B6SA-BLUE Steel 4U Rackmount Compact Stylish Chassis 2 External 5.25" Drive Bays

Pros: I was looking forward to a solution of removable drives and this solution fit the bill. I have had ZERO problems with the case and the backplanes and caddies.
Yes it can get heavy loaded down, but it has smooth metal handles, easy to hold on to and lug and also easy to take handles off.

Cons: A tad cramped but still if you plan you can stuff alot in this case. finding rails can be challenging for any of these 4U cases that

Pros: Plenty of room, all parts reuired come with the package.

Cons: none so far, the case is solid, a bit difficult to work in if you are having problems with the MOBO, you must remove the hot-swaps th get to some of the slots and pins. and to remove or install system drives. But with the right board it shoud no be a problem.

Other Thoughts: The case has some additional wires to deal with the hot swap and case intrusion, however the sensor and the doors are not included in this model, so if you dont mind an accesible case(specially the BIG reser button). is OK

Pros: Reset switch and Power switch have a solid feel.
Lots of ventilation. Hot swap bays fits into two 5.25" drive slots. The drive cages each hold three 5.25" units with the 3.5" bay at the bottom. This was nice because I decided to move the hot swap bay into the top two slots leaving the bottom slot available for an optical ide drive. With the optical drive in the bottom 5.25" slot and an old ide 3.5" hard drive next to it, the cable runs were nice and clean.

Cons: Documentation is weak.
Fans are super noisy.

Other Thoughts: Removeable rack mount brackets.
Almost want to take an egg off for iStar selling the lockable access doors separately. (See item N82E16816215025.) $60+ for two plastic covers seems ridiculous.

Pros: Very Sturdy construction, but heavy. Great hot swap bay design, good looking case.

Cons: Ventilation isnt the greatest. It has 2 rear spots for 80mm fans, and comes with one installed 80mm fan but isnt a the greatest. For anything that produces heat get a pair of high speed fans.

Other Thoughts: I use this as a gaming case and I had to remove the fan behind one of the hot swap bays to allow room for the graphics card. The installed fans, and hot swap fans arent that quiet.

Pros: cheap case with 6 HS Bays

Cons: you can NOT fit a full size dual processor server board into this machine

Other Thoughts: I tried to get a dual Xeon supermicro board into this case and it will not fit

Pros: Heavy material, very sturdy. Great layout. Hot Swap drive bays are easy to relocate and have a very positive locking mechanism. Can hold larger MB's than the spec's list. Has predrilled holes for about every MB layout. Lots of screws and extra parts. Card Holdowns are adjustable.

Cons: No documentation. There is an 8pin connector that go to the extra front panel lights. There is no way to ID how to connect theses except trial and error.