[Suicide Junkie]

As a note:
Mental Singularity Generators are the weakest normal damage weapon in the game, once you've reached max tech.

Only WMGs come close, with the same damage rating, but an additional 10% bonus accuracy.
Lightning rays become weaker at max range, but are tied for 2nd best at minimum range.

The Allegiance Subverter really is an abusive weapon, IMO. I've been thinking about modding it into a "Destroy anything with mental activity on a ship" weapon instead.