I am not a fan of the curved brush, as I do not seem to get the length that I get from the original "Maybelline Great Lash" mascara. I switched out the brush, and the actual mascara "compound" or whatever you call it, works great. If I remember correctly, the curved brush formula cost a bit more, so I would definitely recommend staying with the original! Performance Once again, it is the brush. Definitely not my favorite. I found it caused more clumps than the original mascara. It does provide good volume, however the length of my eyelashes suffered. Ease of Application It is possible to get good coverage with this mascara and brush, however it takes me longer than normal. I have to be rather meticulous during application in order to make my eyelashes clump free. All in all, I love Maybelline Great Lash Mascara, but I would definitely stick with the original formula, with the famous green lid. It is the best option out there in my opinion!