You can't use Vikhrs at night, as there is no FLIR system in the Ka-50. HOT3 has enough range (4300 m), as long as you're clever about using it. Also Gazelle is much more fun to fly, it is a superb trainer, which helps with piloting skill progression. Apart from ATGM and A2A missiles, you have the usual guns and rockets, as well as side mounted minigun gunner station, which you can use. Gazelle is more versatile, as it can pick up downed pilots or deploy SF recon teams in some scenarios.
