What is your favorite case?  

Yeah I cannot see why they call the Antec 1200 a full tower case and the COOLER MASTER Storm Sniper a mid tower. None of them have E-ATX mounts and the CM Storm Sniper is much larger.

Antec 1200

Antec 1200

Not much longer than my Antec 300, just a tiny bit wider and quite a lot taller.

COOLER MASTER Storm Sniper

^^Not a GTX 295 but you can see there is much more room. Also note the PSU fan faces up in the Antec 1200 and down in the CM Storm Sniper. This is because the 1200 has no bottom intakes at all, so the fan has to face up and the PSU will not bring in fresh, cool air from outside the case. In the Storm Sniper there is a filtered bottom intake for the PSU on a tray (which is rubberized to reduce vibrations) as well as a filtered optional 120mm bottom intake fan, so the PSU takes in fresh air and cools the components better.

Antec 1200
22.9" x 8.4" x 20.2" (L x W x H)

COOLER MASTER Storm Sniper
22" x 10" x 21.7" (L x W x H)