these ships are all more advanced alterations of Evader 1, so they all have generally the same idea.
Evader 1

Description: original model ship, meant mostly for 1v1 battles and was generally good at fighting.
Evader 2

Description: Evader 2 is a massive upgrade, with much more armor and reactors more spaced, it was the more powerful than most of the Evader Classes AFTER this one.
Evader 3

Description: Evader 3 was a test to see if ion lasers could be used in an Evader, while it did work, it was marginally weaker than even Evader 1.
Evader 4

Description: Evader 4 used new technology to create a powerful combination between Electrobolts and Small lasers, even this was sometimes beaten by Evader 2 due to its slight DPS decrease.
Evader 5

Description: Evader 5 was a slightly modified Evader 4, added armor and some more reactors, this created a better ship for when you are fighting small ships but due to its increased reactors chain reactions are likely.
Evader 6

Description: Evader 6 (current model) is a vast improvement to all other evader Classes, with is armored covered reactor clusters, it can continue to fight much longer than the others, it also has rear defense and large armor spikes to defend from multi ship attacks.