That first case would have the best ventilation out of the three, but not that great.
I only have a cheap case, but it's a good example of one with good ventilation.
In these pictures, notice that I have:
- Front vent to allow air to come in and a place to mount a 120mm fan in the front.
- Large side vent with fan to blow in fresh air near the CPU fan.
- Rear vents with 120mm fan mount.
In this picture, notice the front vents and large side vents.
In this picutre, notice the front and rear 120mm fan mounts. Though I don't have fans yet, I will. The front will pull fresh air in and the rear will push the warm out out.