I currently have a Thermaltake Tsunami; it has served me well so far but l consider getting a 6950 that my current case won't be able to host 
I am down to three choices.
1. Aerocool Strike X
2. Coolmaster CM 690 II Basic
3. Coolmaster HAF 922
What would be the best choice?

I am down to three choices.
1. Aerocool Strike X
2. Coolmaster CM 690 II Basic
3. Coolmaster HAF 922
What would be the best choice?