I don't see thorough reviews ATM
if you are in a hurry, think about how many HDD you'll use in the future.
The size and weight of the case is important if you plan to move it a lot.
Space inside the case for the mobo and wire management if you need them.
Illumination in the dark, depends on your preference.
If you are only aiming for airflow, i say go for the HAF922 is well built and has good airflow, even if it's a mid-tower case.
these reviews might help:
Bit-Tech
OverclockersClub
I really can't find thorough information about the Gigabyte cases but Gigabyte is specialized in mobos.
CoolerMaster are specialized in cases, so my suggestions is, go with the HAF922.
If you are able to find a thorough review of the Gigabyte cases, compare their results to the HAF922 and then pick one.
Good luck ^_^/