Discussion Foam Neck Brace vs. Neck Pillow for Travel Comfort

I remember years ago I had to wear a neck brace and it really relaxed my neck muscles and kept my neck in a comfortable position for hours. Now, I'm thinking about using something similar for long flights. Has anyone tried using a foam neck brace instead of a traditional neck pillow for travel? How does it compare in terms of comfort and support? I'm curious if it's a viable option for those of us who struggle to find the right neck pillow.