Neckstrap and pinch. Thumbs on top and fingers on the front like Szabo. I started flying that way when I picked up helis years ago without even realizing it because I needed the fine motor control for hovers. The opposing pressure gives me the control isolation I need to move one channel without affecting another, like rudder/pitch. Thumbs just feels clumsy to me now for some reason unless I have a ton of expo dialed in.