I am curious if anyone has experience making fairly realistic / hyperrealistic spatial audio illusions (for instance the impression of someone circling around your head) that work both with headphone and speaker monitoring. Binaural techniques / HRTFs seem to work best with headphones, but break down very significantly in speakers. However, stereo panning sounds really awful in extremes on headphones. I've found the duplex panner which I have been using a lot and really helps with the stereo panning problem, and I've been using EQ and reverb intuitively to give a sense of position, depth, and space, but I wonder if there are other techniques or approaches to this strange problem floating around out there.
The goal is not necessarily to be 100% realistic, but rather to surprise and please a listener to be suddenly immersed in a spatial sound experience. So it's more about feeling good, exciting, and spatial.
This is for podcast/radio style production, so it's about equally likely that someone will be listening with speakers (even car speakers) or headphones, and the goal is to give the best spatial experience across as many listening scenarios as possible.
Excited to hear how anyone has approached a similar problem!