[Khalil]

I have used most brand cases on the market, some are great, some good and many are bad.
This rating is for PC cases, does not include server and workstation chassis.
Blue is top notch (excellent fit and finish, ample cooling, everything goes in hassle free, surfaces are clean, no chance of getting wounded while building the machine)
Green is Good (Solid build, good finish, tolerances are not the best, most surfaces are clean, low risk of getting wounded while building the machine)
Red is bad (funky finish, most times come with scratches and broken parts, missing hardware, motherboard and other components just don't fit right, you may need to make modifications, the metal is sharp and you can easily get a nasty gash on your hand while assembling the system)

Lian Li
Antec
Cooler Master
Zalman
Silverstone
Therlmatake

NZXT
Sigma
Foxconn
Gigabyte
Xclio
Chieftec ($75 plus)
Apevia
Enermax
ABS
InWin
JetWay
Ikonik
Enlight

Aerocool
Apex
Ark
Azza
Broadway
Raidmax
Rosewill (NOTE: Model dependent, they do have SOME good cases)
Dynapower
Linkworld
Winsis
Xion
Logisys
Coolmax

Please note, this rating is based on cases I have actually used to build systems. There are other brands I have not dealt with so I cannot rate them.