Haven't got around to playing much of 0.9 (mostly played 0.8 ), but it's pretty difficult to decide. IMO that just shows how well balanced and satisfying the combat ships are (with obvious exceptions for things like combat freighters).
Frigate: It has to be wolf. So versatile and really evolves with both your soft and hard skills. I go graviton beam, ion cannon, 2x PD and 2x swarmers.
Destroyer: SO Hammerhead with 2x HMGs, 2x light mortar or 2x LAG, 2x PD
Cruiser: Aurora with 3x AM blaster in the front, sabot SRM pod, 1x salamander, 2x pulse laser, 1x tac laser (for forcing shields up), 1x ion cannon, 1x pilum LRM and rest as PD
Capital: Odyssey with 1x autopulse and 1x tach lance on the left + burst PD & IR pulse lasers, guardian PD and ion cannons on the right, 3x pilums and xyphos (because they're godlike as backup PD when flux locked or overloading). This was my flagship but I switched it to my best officer when I got a hamburger harbinger
