TIROS lights are impressive in foggy environment. My old Inova XO totally blows my other reflectored lights out of the water. Even though the XO is less powerful than the others.
Danbo,
I also own a T5 and I agree that it's a great light. The workmanship and design are top notch too. The light output is fantastic for a LED light of this size. I also own a few other Inova lights and I'm very impressed with all of them.