There were many times when Maybellines smeared and also wasn't as dark as I like my eyeliner to be.
Look & Feel -
Maybelline's application is smooth but just not as smooth as Loreal's fluidity Which draws on nicely and dries much faster. Loreal's also has a semi glossy finish while Maybelline is more matte which turns charcoal.
Maybelline's
Loreal's (excuse my extreme usage mess)
Brush - Loreals brush has a more flat tip while Maybelline's was pointy. Lining with a flat tip brush is so much easier than pointy.
Loreal's is on top
Maybelline's on bottom.
Lasting Effect - Maybellines turned charcoal - gray by the end of the day while Loreal's blackest black lasted all day and night!!
Price - Maybelline's $7.99 vs Loreal's $9.95 Obviously you would go for the cheaper one but just for a buck more goes a long way.
The winner here is no contest - Loreal's 24hr Gel liner.