Hey, I said she does as much as MarisaB, not "MarisaA/B's damage is amazing", don't put words in my mouth :V
If you're going for damage, then indisputably ReimuB/MarisaC. If you want a less focused type, then ReimuA's the best choice, but MarisaA's not outright terrible either. ReimuC is utter garbage.
And no-bug MarisaB's just kind of there.