I updated the first post again with some thoughts on the Moray, but I am going to post all of the Air Caste stats here for comparison.
Barracuda         2 for 175 with +1 for 75 points
Fighter-bomber
Save 6+
Ion Cannon 45cm, AP4+/AT5+,  Fixed Forward Arc
Burst Cannons 15cm, AP4+/AA6+
Missile Pod 30cm AP5+/AT6+/AA5+ Fixed Forward Arc
TigerShark        2 for 225
Bomber
Save 4+
Twin-Linked Ion Cannon 45cm, AP3+/AT4+  Fixed Forward Arc
Burst Cannons 15cm, AP4+/AA6+
Twin-Linked Missile Pod 30cm AP4+/AT5+/AA5+ Fixed Forward Arc
Seeker Missiles  45cm  2x AT5+  Fixed Forward Arc, Guided Missile
TigerShark AX-1-0       2 for 350
Bomber
Save 4+
Twin-Linked Railcannon 45cm, MW3+  Fixed Forward Arc, Titan Killer (D3)
Burst Cannons 15cm, AP4+/AA6+
Twin-Linked Missile Pod 30cm AP4+/AT5+/AA5+ Fixed Forward Arc
Seeker Missiles  45cm  2x AT5+  Fixed Forward Arc, Guided Missile
Moray         Cost

??
20cm Skimmer
Save 5+
Twin-Linked Railcannon  75cm, MW3+  Fixed Forward Arc, Titan Killer (D3)
OR4x Twin-Linked  Ion Cannon 60cm, AP3+/AT4+  Fixed Forward Arc
2x Twin-Linked, Long-Barreled Burst Cannons 30cm, AP4+/AA6+
Twin-Linked Missile Pod 45cm AP4+/AT5+ Fixed Forward Arc
2x Seeker Missile  AT5+  Guided Missile
DC 3, Reinforced Armour, 5+ Tau Deflector, Always Popped Up, Planetfall
Critical:  The Tau Deflector is disabled and is unavailable for the rest of the game, further criticals add 1 point of damage.
The Moray may be armed with a Railcannon or Ion Cannons, not both.
Manta              700 Points
20cm Skimmer
Save 5+
Twin-Linked Railcannon  105cm, MW2+  Fixed Forward Arc, Titan Killer (D3)
3x Twin-Linked, Long-Barreled Ion Cannon 90cm, AP3+/AT4+  Fixed Forward Arc
4x Twin-Linked, Long-Barreled Burst Cannons 30cm, AP4+/AA6+
Twin-Linked Missile Pod 45cm AP4+/AT5+ Fixed Forward Arc
DC 8, Reinforced Armour, 5+ Tau Deflector, Always Popped Up, Transport (unchanged), Planetfall
Critical:  The Tau Deflector is disabled and is unavailable for the rest of the game, further criticals add 1 point of damage.
I tried to put these together as a whole so they all fit the same pattern and each has a role.  The toughest thing is keeping the AX-1-0 and TK Moray in different roles.  The easiest solution would be to only have the Ion Cannons on the Moray, but I doubt that would be a popular choice.