Hangar Pet for Jem'Hadar Vanguard Carrier?

What's the best option for the JH Vanguard Carrier? I've heard good things about lost souls, Rom drone ships and also just the gunboats the carrier comes with. But I'm not certain which is the best. I'm currently going for more of a sci/torp build atm with gravity well and no SAD yet if that all matters.

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Thank you for any advice!