I bought this as a Christmas present to myself and boy was I amazed! It has 11 bays for cd/dvd drives, it looks really good and is very strong.
All of the front bay covers have a thin foam insert to trap dust pulled into the case by the supplied fans. These are very easy to clean. The fans supplied with the case are ample for three-four hard drives and maybe a seldom used cd drive. Anything more and you'd want to replace the provided 120mm fans with maybe a Zalman or Arctic Cooling variant.
There is a lot of space inside for even the largest motherboards, this case supports mATX through to normal ATX sizes.
It is easy to fit cd/dvd drives with the supplied plastic rails, and it is very easy to take them out.
Overalll this is a very good case and I wouldn't change it for the world, well maybe a nice Lian Li one.
I purchased the CM Stacker as I required a large number of HDDs in one System. With 11 5.25" bays, and using 3 of CoolerMaster's 4in3 devices (which allow 4 3.5" drives to be installed in 3 5.25" bays), I can fit my 9 Hard Drives, a Floppy and a DVD Writer, and the intereior still looks pretty spacious.
The stacker also has an interesting front bay-cover system, with removable foam filters for easy cleaning, and a host of exhaust fans at the rear, side, and top, which combined, delivers excellent air flow, even without the optional cross-flow fan.
My only real wish is for a few more expansion bays, as my 'board has additional ports on backplates, but I have nowhere to put them, as I have all my PCI slots in use.
CM Stacker is a new computer chassis from Cooler Master with extremely powerful functions. The innovative design supports Extend ATX, BTX and dual power supply, making for easy upgrading. Besides its unique cross-flow fan, the CM Stacker supports up to eight regular fans, giving it unmatched cooling performance. Built from 1.0 mm thick steel plate, the CM Stacker is immensely strong, with a high-quality anti-vibration stand providing extra protection for the system. Designed for maximum extensibility and allowing the user the utmost flexibility in the utilization of space, the CM Stacker makes upgrading incredibly easy, and can be configured to meet your own personal needs with minimum hassle.