I'm a Lancome mascara addict lol - haven't used a different brand in years! At the moment I'm using L'Extreme (waterproof) and I like that it goes on in thin layers - hate clumps!
I've also started using the "Cils Booster", under my mascara every day, and absolutely love it! It's literally transformed my lashes - they're thin, short and straight, so I need all the help I can get, lol.
By the way, am I the only muppet who has thought for years that the only way to remove Lancome waterproof mascara without pulling out your lashes was their own (very expensive) waterproof eye makeup remover (Bi-facil or something)??? A friend recenly put me on to Johnson's 3-in-1 facial wipes, and they dissolve it like magic! A LOT less expensive!