A-wing, nimble little dog fighter. X-wing, trusted middle ground fighter that really brought the rebels to the fighter war. Y-wing, old warhorse that while not bad had seen its time past.
However my favorite is the B-Wing. I love the use of the modular design, exchanging weapons by need or simple repair trouble is always a plus. In a SW-RPG, I used a four ion cannon/two laser cannon combo for capturing enemy ships for selling them off. Or a six laser cannon combo for trashing enemy fighter formations.
Jinsei wa cho no yume, shi no tsubasa no bitodesu