I like the black and white top left one a lot, but the other ones with colors look bad. Somehow those kind of logos need to be in just two colors.

As for Damarus' logos, I like the Banner 3 dark and light versions. I don't really like the logos (except Fourth possible logo light), especially not the darker ones. The blue color should be smoother, not with a grid,

There are a LOT of entries now by the way, some very good ones too,

Cheers