Funny for me, I use the large tip in the left and the small tip in the right? I didn't realize that my ear canals were that much different. How about you?
Welp, I tried the large in both ears and hated it. Even though the tip test said I had a good seal, I felt like they were too big. Outside sound seems to leak through and every time I took them out, the tips flipped outward. So, I’m back to the mediums and feel much more comfortable.