left: MAC, right: ELF
pros: fine tip, 0.3 oz (a tiny bit bigger than elf.) Lasts all day (with UD primer potion).
cons: I sometimes find myself going over my line twice to get the amount of pigment I want.
pros: one swipe and I'm done, great pigment, true black. Lasts all day (with UD primer potion)
MAC: $17.50 ELF $1.00
My Review: I personally prefer eyeliner pens, for me it is much easier to apply and less messy. I bought the MAC penultimate eyeliner and fell in love with it but about a month ago my friend gifted me with the ELF waterproof eyeliner pen and although I love both of them the price difference is what truly gets me. If you are looking for a cheaper alternative or perhaps just want to start experimenting with eyeliner, I recommend the ELF eyeliner pen in a heartbeat. I hope this helped, feel free to ask any questions or let me know of your favorite eyeliner.