Just for the record, the Xigmatek Migard actually has better cooling than the CM690 II
Midgard (low fan speed) 42/51 degrees C CPU/GPU
CM 690 II (low fan speed) 44/53 degrees C CPU/GPU
Although the 690 II will accept water cooling a lot easier if you ever plan to go that route. And probably slightly edges the Midgard on build quality.
Possible to ask what this is based on? Idle with stock fans? Or kitted out fully? Just seems odd as the 690 has space for more fans along with larger front etc.