QUOTE(clawhammer @ May 22 2011, 01:55 AM)
I can say you have good hands which are able to scientifically test fans just by using bare hands without tools

The CIA or FBI should hire people like you which have such fabulous skills. The other thing you forget is about the noise level. Obviously there are fans which have higher airflow than the F12 but this also means the fan is producing more noise and probably higher vibration too. The law of physics apply, there's no such thing as a silent fan with high static pressure and superb 100cfm airflow. If airflow is what you want then please buy a Delta 180cfm-200cfm fan. When you compare fans and when people say performance, it means:
1. Noise Level
2. Airflow
3. Static Pressure
Did you take into account all these factors before feeling "shocked"? A proper reviewer comparing fans would also use proper tools to justify their claims scientifically.
i m shocked becoz both the vizo n f12 are rated at around 60cfm
u no need a good hand to feel it, the difference is just too much, u can feel it with any part of ur body
i stated tat i only compared airflow, no static pressure (dunno how to measure)
i m comparing both same air flow (~60cfm) fan (not 100+cfm), while realizing the vizo is much more stronger than the f12
by then i also doubt that how well the f12 static pressure can help in improving air flow, since the air flow already lose quite a bit
anyway, just some PERSONAL opinion from a me