here is some info from another forum i found....
uh oh, looks like Super Sun 2 just got taken out by the giant Magnum XXXL
I spent more time on these tests so we can chart the numbers and get a more accurate graph. I did a 5x5 area for the test @ 24" height, and did readings every 6". That is 121 readings per reflector!! Same basic test procedure as was done a couple years ago, so you can go read the first couple pages if you missed that.
NOTE: In my previous tests, I multiplied the number off my meter by 100, in these tests I forgot to do that. Makes no difference, but I am sure someone would ask why the numbers are so low.
XXXL Average 21.94
SS2 Average 21.06
Not a huge difference in averages, but about 4% more light coming from the XXXL.
Here are some charts, fairly similar, but see how the SS2 has a hotter hot spot in the middle.
Now let's look at some raw data
Looks like the XXXL has a more even spread of light across the area. The hot spots are not as bright, and the low spots are not as low. I still think the SS2 will be better for smaller areas with 600w lights, but I might just have to test that out now.
The XXXL is a very nice reflector that is sorta like a giant version of the SS2. It has spectral aluminum inserts on all inner surfaces, and a slim socket that does not obstruct air flow. The only problem I see with this reflector is that it is so big, it makes things hard to move around if you have a bunch of these. These are as big as 3 SS2 reflectors. They also cost about 50% more than the SS2
i cant get the graphs to show sorry but the info on the 2 is good...