stock starlines, and old grey starlines (these are on now). i don't want to use foam (some treble would be missed). i'm going to try others, thanks. short wide tips might be the solution (purchased a new batch, in transit), but the result is shallow on my ears and the iems tend to slip out. they are not comfy anyway. noticed they sound better at low volume (but i use to listen louder), and they are not forgiving with too compressed audio or bad recordings. trying them again now..