I've been trying to tame the sibilance on mine. The tip that worked best for me was the triple flange tip I got with the brainwavz S1. But I am currently using a pair of JVC spiral dots. Now I have used sony hybrids in the past, and while I consider them to be good, they are nothing compared to the spiral dots. The spiral dots are the most comfortable single flange tips I have ever used. I have dry ears and tend to get irritated within minutes of IEM use (which is why so many of my IEMs tend to sit while I use cans). But with these tips, I fell asleep last night with Triplefi10Pros jammed in my ears. YES, that's right! TFI10 and SLEEP. Not only did they sound fantastic, but they were so comfortable and snug that when I woke up in the middle of the night I still had them firmly lodged in my ears. Today upon initial listen I had my doubts about the spiral dots being able to tame the sibilance on my A83s since they're no matter what, a set of single flange tips. I was recommened Vmodas Bliss 3.0 in the past. But the crooks at Vmoda never sent me the pair. 10 bucks wasted that I wish I had put into the JVCs sooner. The sibilance wasn't immediately gone on the first few songs, but later on I noticed virtually no sibilance at all. So I need to test the tips out a bit more before concluding. But so far, they are just amazing. Currently planning on buying several more sets of these to replace all regular silicon tips.
They're only downside is cost. A staggering 2 dollars per piece. you will pay 12-16 for 6 pieces or 3 pairs. I can get them locally here in Korea for around 10 dollars a box. But I am not regretting the purchase at all.