Return or try Blue?

Hi
I was just dropping by and noticed this discussion on blue light devices versus white light. I have tried both. I do not suffer from SAD but I do use a lightbox for the circadian rhythm disorder, non-24 hour sleep pattern.

I found this box to be effective, Diamond 4 from SAD Lightbox Company.
http://www.sad.uk.com/products/d104.php

But, having read about the superiority of blue light for shifting circadian rhythms, I ordered GoLite hoping I could use it for less time. (my model is slightly older than the one in the link, but it's the same technology as far as I know)
http://www.apollolight.com/golite.html

Unfortunately it is quite ineffective for me. My theory is that although this has blue light, the lit area is tiny and the light is not very intense.
The Diamond 4 screen is massive by comparison and much more light reaches my eyes.

White light may well be 10 times less effective than an equivalent amount of blue light, but the total amount of light from the Diamond 4 could well be more than 10 times what I'd get from the GoLite, because it is so much bigger, so it is not necessarily more effective. Besides, full spectrum light does contain some blue light also.

Of course that is just my experience, and I'm sure blue light does work for some people.

tinted