Never taken MDMA but clonazepam is a good benzo for me. It's not as quick acting as lorazepam and it doesn't seem to hit as hard, but I find it very sedating and it lasts a lot longer.
Not that long ago I had all three of the major benzos in one day, alprazolam, lorazepam, and clonazepam. That was interesting though I still prefer one benzo with some alcohol as it makes me a lot more social than just benzo soup.