Well, I'm partial to the SR-2 Normandy. It's the best frigate the alliance navy has and the first human aircraft that uses Turian ship design. Not to mention it has a lot of cannons to calibrate. You know, the good stuff in a ship. Stealth, speed, cannons, and a Garrus.
-
I really like the aesthetic of the UNSC ships in Halo. PoA is a beast.