i have recently bought the gel eyeliner in black named "Black Jack with Jack Black" from Catrice's new range to test it out. it contains 4g and cost me (i think) 3.99€.
it comes in a sturdy glass jar, which i like. at this point i still can't say anything about it's air-tightness, though.
i have worn it several times and now i can draw my conclusion:
it is a normal black, that is not very deep and rich because of the thin consistency. it's like a light cream, not very jelly. the texture is only a bit thicker than of a skin moisturiser cream.
it dries matte, you can't really smudge it like the Blacktrack Fluidline from MAC.
if i rub it with a paper tissue after about 5 minutes, it will fade a lot. but weird enough after that point, it wont fade any, i could rub as hard as i wanted :)
i had the same experience when i wore it in my eye make up: it faded a bit through the day, smudged at the outer edges, transferred to my upper lid (as i have a folded lid).
BUT: it didn't smudge at all when i cried really hard, or when i teared as the wind blew in my face. so i think it's quite waterproof, but not oil-proof at all. even the smallest amount of your natural skin oils can make it fade/smudge.
also the powder pigment fraction in this gel liner might be too high, so it will transfer the surface layer but the most part is quite smudge-proof. really weird and hard to explain, i hope you get what i mean :P
i don't think that i can recommend this gel liner, i hope the essence one is a bit better.
the version from Maybelline i won't try, at 9 or 10€ it's quite expensive and then i would rather blow out 10€ more and get the Bobbi Brown one.