Pros:
Cools your hardwares well
Cool looking [subjective]
3 huge silent fans with removable filters
Easy access to I/O panel
Cable management
Cons:
Won't fit most EATX boards
HDD installation/upgrade requires your motherboard to be uninstalled
Other thoughts:
Won't fit HD5970 without removing the middle fan guard
Best if you use a video card/s with external exhaust cooling design
Requires a desk that's >60cm wide