octo
Compared (using battle helper) to stock ships the first one in descending price your design beats (excluding The Beast, which practically everything beats) is the Umbrage.
At a slightly lower price, this version beats everything up to the Gatecrasher, as well as everything else up to the Crescent Wrath except the Cerberus. Under manual control it can beat everything stock except the Terror.

I also considered a version with diversified armaments. It's still a hair cheaper than the original, but having penetrating weapons doesn't help as much as I'd hoped. It beats the previous upgrade, but doesn't fare better against stock ships in battle helper.
