ED: Python for the "Thunderbolt" look and large HP just beneath the nose, perfect for large bore auto-cannons. Also the "pirate"-paintjob is available for that beast.
Star Citizen: Redeemer Gunship. A beautiful gunship with pivoting engines, sleek frame and pure awesome-sauce.
X2 - Xtended: Pirate Deathclaw (looked like an X) Symmetry wins with a centred cockpit and 8 hardpoints made to rain death!
X3 - Xtended: Carrack, because of the retro design and the "lone warrior" theme the ship emits.
Freelancer: The Dagger, the look killed, reminds me a lot of the Python in ED.
Wing-Commander Privateer: Centurion, loner merc ship bred with an agile fighter. Symmetry, style, frontal rain of death and rear turret.
Overall, i like thought through ships.