All Key LED is using CREE Version. Compare with Other Brand with Key LED, it is using the same chips, it is no different for you if you using the same chips with other brand. But Key LED Price is mostly lower if using same chips Key LED provides the a best mostly price rate with customer New K3 Model Fan is no noise, the Fan will auto start over 45" Degree temperature, that mean your room is silent, compare with other brand, the fan will work always 24 hours a days have a sound and easy have a noise after 6 month to repair Key LED controller is never damage before, controller is 100% no problem Key Chips is never damage before since it is using Cree Chips Key LED is using a aluminum , it provides faster method for heat dispersion Key LED is uing 3W Cree Power Chips, compare with other brand 5W or 30W LED Lighting, it is Lower Heat, save our enviorement and sometime if using 5W or 30W Power, it will make death for SPS if keep the coral on upper side. But Key LED role is provides a cover all same color range on your tank