How well does m.a.c's mascara x work?

i love m.a.c's plush lash and zoom lash and ive always wondered about mascara x. can anyone tell me about how it works and how it is compared to plush lash and/or zoom lash?How well does m.a.c's mascara x work?
I have it and i love it. It adds some fibers to your lashed which is great and gives them the length you may need.How well does m.a.c's mascara x work?
its great