I had never bought a high-end mascara before. I did a lot of research, and decided on this one, after hearing great things.
It is most certainly better than the drug-store mascaras I have used previously. It is very black, gives good length, separates the lashes nicely,and it's staying power is unmatched. This can be problematic, as it can be difficult to get it off, even when scrubbing. Benefit do have a specific cleanser for this product, which is great, however that is of course an extra purchase you may not want to make.
My eye-lashes are very straight, and even when using an eye-lash curler, this mascara does not curl my lashes particularly well. I would be keen to try the rollerball one to see if this may be better.
Overall, I am happy with this product, despite its slight drawbacks. I have been genuinely asked if I have false eye-lashes on (I personally wouldn't say it makes them look that way though). If you're unsure, I think it is definitely worth trying, and is something I will repurchase in the future.