I use the cp155 and the tips fit on the zero easily. Best choice imo, but the medium size is surprisingly small compared to other medium tips I've used. My left ear canal is on the larger end, while my right ear is more medium sized, but the medium tips were way too small for both my ears. I got the large size and they fit pretty much perfectly, slightly worse fit for my right ear. Medium tip size was said to be too small on Amazon reviews often.
Squisher123 t1_iugw3kb wrote
Reply to comment by johnydazzles27s in Just realized some of my IEMs don't fit in my ear by johnydazzles27s
I use the cp155 and the tips fit on the zero easily. Best choice imo, but the medium size is surprisingly small compared to other medium tips I've used. My left ear canal is on the larger end, while my right ear is more medium sized, but the medium tips were way too small for both my ears. I got the large size and they fit pretty much perfectly, slightly worse fit for my right ear. Medium tip size was said to be too small on Amazon reviews often.