Can't decide between transports

[Boldimore]

So I collected enough money to buy me a 5k transport(even the most expensive with all gadgets).
After restarting my character to get the Ageira ID, IFF I went to take a look at the transports on Discovery Wiki and soon narrowed down to 3 possibilities:
1. "Stork" Civilian Advanced Train
2. "Mastodon" Liberty Transport
3. "Bison" Class C5 Liberty Transport

Firepower:
Bison(10 turrets) > Stork(6 turrets) > Mastodon(1 turret)

Cargo size:
Stork(5000) = Mastodon(5000) > Bison(4300)

Turn rate(degrees/s):
Mastodon(11.46) = Bison(11.46) > Stork(8.59)

Individual ship size:
Stork(fairly large, I think the largest of all transports - from nose to butt)
Mastodon(It's not too huge, but its uselessly huge)
Bison(Large, but not too large)

Possibility of getting stuck while entering trade lane(none-few, few-moderate, moderate-often, often-GOD DAMN STUCK AGAIN):
Stork(none-few)
Mastodon(few-moderate)
Bison(none-few)

So I would like to ask you guys to share me your wisdom of these 3 transports so I can decide which to fly.
If you are going to recommend me some other transport, keep in mind that I have an Ageira ID.
I ask nicely not to post useless reply's. (example: "Buy the Mastodon so I can rob you off more easily")

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