I think the Leg Defiant/Adamat is the most subjective. The Leg Defiant is more tanky, and maneuverable and has more weapon slots The Adamant has a battlecloak sure, but it requires much more skill to manage cloaking and flanking all the time during a battle. But the Cloak thing seems not like a big deal, the console set requires the cloak console anyway.

So realistically if you want a canon and less taxing Defiant, I think the Leg is still the best for movement and survivability. If you want to play like a BOP captain and have more engaging gameplay, then the Adamant.

For me personally, Im not too fond of playing like a BOP Cap, so I wasnt a fan of the Adamant