Hey, I like that website too. /ubbthreads/images/graemlins/grin.gif
The L6 will run 1 hour & 45 minutes+ in regulation. It has a tighter hot-spot than the L4 resulting in greater throw. Brightess appears greater with the L6 because of the larger reflector but actual brightness coming from the LED seems very close.
Wow Sean, that beam shot of the ceiling fan, L4 vs. L6, is so telling. Your site also includes the Tigerlight, which will be my next purchase, so the comparisons are ideal for my purposes. Nice website.