The Sunesis
The Sunesis is a Destroyer typically used for salvaging. It isn't even in my top 100 of ships used, and it comes with some serious drawbacks - primarily in the speed department. Depending on the fit it can have a serious tank and solid dps. But it is so underrated that few people ever fly them for PvP.
As a test I fly one yesterday for an hour in highly competitive systems in Factional Warfare space and was unable to get a single engagement in it. For one thing, given that it is classified as a "pirate" Destroyer, it is limited in the types of plex it can enter. Which narrows its potential engagement window considerably.
The Sunesis needs a slight speed boost and the ability to enter small navy plex like other ships in its class.