When purchasing upgrades quite often I choose the most common turrets to that ship. Ion on Y wings, TLT in K wings... And of course Dorsal Turret is THE weapon to equip a VCX. It is up there, no doubt, a quite good looking Dorsal with long guns.
But I love VCX with Ions. If you can caught one of those Aces...next turn gently turn and fire at will. I usually deploy the shuttle when the VCX is badly damaged, and there are plenty of firing.solutions to give them Ions.