So, finally, my boyfriend had his birthday and opened his gifts

The sony case is really nice, and the light is nice too, but I don't regret having bought the tuff-luv + eluminator, since this combination is much more feminine than the black leather sony case.
A few pictures:
Side by side:
In the dark. The reflection appears a bit more agressive with the eluminator, the light seems to be stronger, and it is, if you use the brightest setting. I like the least bright one, so I'm happy with it, the Sony is nice but a bit too bright for me.
Anyway, the boyfriend was very happy with the case (and the reader, of course) and he liked the fact that it was very classy. He also thinks the tuff-luv one is better for me since it's typically my style
Side by side, covers closed:
Same, but back view:
I would say the tuff-luv one with the e-luminator is slightly heavier than the sony case with light, but it's not really obvious, so I guess both are still pretty light and the weight is not really disturbing for either of them.
I also did a few pictures of the sony case, if somebody is interested, I can post them.