pros - solid construction, two fans with speed controller, four front USB ports, decent amount of holes to run cables behind the mobo tray, large CPU cut out
cons - break away pci-slot covers, PSU only goes in fan side up, thumb screws used for drives
cooler master 431
pros - front USB 3.0 port, three total front USB ports, PSU can be mounted fan side up or down, tool less drive system, HDD hot swap
cons - break away pci-slot covers, just one fan, bottom fan has no filter, smaller CPU cut out hole then the antec
the 431 is an updated case of the 430 so no need to consider the 430.
of the three I would go with the antec. it has more fans, sturdier side panel and two inches taller then the CM (although its 1/2" longer)