They're both great case.Same ones i liked when it came to a new case.
I made it easier on myself and shopped in person.
The HAF 922 is larger then the 902 and has no filters.
I have a 902 which has filters.
Choose whichever one you prefer,either choice is excellent imo.
Cable management isn't an issue if you have a modular psu.
Both feature excellent air-flow.
All my internal components have temp readings in the low 30's C.