>>544254598
Redfor rotors have more sovl.
It's also easier to launch Vikhrs in the Ka-50 than Hellfires in the AH-64.
OH-6A is probably the best "trainer" in the sim (and free), but Huey is a close second. Bare bones, no systems, no assists, just you and the control linkages.
Mi-8 would be the Russian equivalent, but power management is a bit trickier, visibility is worse, and you'll develop a habit of always wanting to land helicopters straight-in like a fixed-wing aircraft.
The Hip is my favorite thing to fly in DCS, it's a big awkward 250kph-cruise battle bus and making it dance is a joy.