So I have seen all of the ships and here is what I think of them:
XS-Freighter (Smuggler)
Great interior design with a good layout. It gives off the feel of a flying cantina which is just where you would expect to find a smuggler. The exterior is reminiscent of the Millennium Falcon and Ebon Hawk already part of Star Wars cannon.
X-70B Phantom (Imperial Agent)
Probably my favorite ship for exterior and probably exterior. The sleek design is just what you'd expect for a secret agent who wishes to remain undetected. The interior is orderly and very business-like. Simple and effective.
Defender (Jedi Kinght/Consular)
Not a bad ship. Kind of reminds me of the head of a hammerhead shark. For a ship that is supposed to be an envoy of peace, the ship could use some sprucing up on the outside. It's kind of clunky and generic. Inside is a bit better. Bright colors and openness make for a good place to host a bunch of officials or hold a war meeting. One thing that the Defender is missing is a crew quarters. Seems to be the only ship missing such a thing.
Fury (Sith Warrioer/Inquisitor)
Now this is a good ship. The outside makes it look like a weapon of war. It could easily strike terror (or at least surprise) into the enemy. It's a lethal machine. Inside it is simple. Bridge here, med-bay there, everything has a place. It is a place for the cold and calculating Sith.
BT-7 Thunderclap (Trooper)
Now this is one great ship on the inside, everything a trooper needs. Weapons aplenty, place to relax when on leave, a debriefing room for before and after operations, pin-ups of naughty female aliens. It's a home away from home. Outside, this one made me laugh. Can't take a sideways Y seriously, lol.
D-5 Mantis
Now this ship I have to say, somewhat reminded me of Firefly. It's a very simple ship on the inside. On the outside...it's a box with engine wings. Needs a bit of work.