Ships with unique/odd setups. I have a Blossom with 3 Carbines and 3 Chain Guns. I also have a Marauder with 4 Debs, 2 Cannonball Missiles, and an MR.
Oh, I also have the nasty habit of collecting a single unit of every commodity I come across on my derp Percheron. Gotta make those police work to find the contraband:P