Preserve luminosity

I understand that alot of the times it makes everything look terrible, but are there any time where any of you not check it? cause in this video I'm making I'm having trouble to decide if I should preserve or not
this is what I mean

http://nitrambelac.tripod.com/Preserved.jpg
http://nitrambelac.tripod.com/not_preserved.jpg

it kinda looks good if I don't preserve doesn't it?
I'm using After Effects

 

I rarely preserve luminosity on lightsabers, lol, as you said, I just don't like the way it looks. I feel like it's not glowy enough...

Of course, Ryan Weiber says you should, so most people do...but eh I use Ryan's method almost exactly except for the luminosity part.

Personal preference, I'm sure...

 

I think it depends on the background of what looks best. If you have a bright background (like snow) then the unpreserved sabers look better. On a dark background preserved luminosity looks better in my opinion.

 

Darth_Bone is right....he he...I said "Bone".