The single best terran ship, as always, would have to be one of it's pods - i would think the minotaur. The best offensive combination for the terrans in this round (and almost every round in the past) is that of the Pegasus and Minotaur (we all know this ship as the Demeter :P).
Defensively, it depends on what you are trying to defend against. this area is less clear and tbh its up to you