I can't decide which, the UE Cruiser, the Igazra, or the Crescent warship, each has pros and cons.
UE Cruiser- has plenty of space for upgrades, defense it KA, but speed and agility suck even sometimes with upgrades, not to mention you can't do Azdgari mission strings with it.
Crescent warship- fast and agile, powerful shielding, though it has some space, not alot to do with anyways.
Igazra- I think it falls between a crescent warship and the UE cruiser.
When I upgrade my ship, I ignore range weapons that you have to buy ammos for because I don't want to travel on the other side of the galaxy just to get more, fighter bays I make exceptions to. Other than that, I go head on with bad guys like a fighter, even against fighters, I use MP method if I know that I cannot bite off more than I can chew, but that's just me.