It doesn't matter what you choose first. They are all trash and each and every last one of them goes in the dumpster first thing. Just pick one at random, then sell it. Their only use is starbase food. It's not even a blue, let alone purple, and you can get better for less off the exchange. A Blue Boff of your choice of race will cost you maybe $300. This is not going to break the bank of even the poorest noob.