I was hoping you would reply IjokerI - I saw you tried out a lot of tips in the M6 review thread! The slow slip out in my left ear has happened with the triple flange, large and mid singles - haven't tried the smalls yet but I will give them a go tonight. The issue seemed to be worse with the large singles, so it may be that my left canal is a tiny bit smaller than my right, so swapping to the smallest singles may be just the ticket.
I think you mentioned using Shure 'Olive' tips in the review thread (IIRC), these look quite nice; you mentioned hollowing out the core or something on these - was this necessary in order to get them to fit on the M6 nozzle or just a technique to improve performance? I am also looking at the T200 complys but these are a bit more expensive per pair, and I am not sure if they are as durable since Shure claims the olives are washable. As I've mentioned, I'm pretty new to IEMs, so I am pretty keen to experiment with different tip types.
Can you comment on which of the ones you tried with the M6 - Sony Hybrid, Shure Olive, Monster Tripple flange [which I think you had pics of?] and any others you've tried - you found to work best, both for isolation and for sound quality? I know it's always going to vary from ear to ear, but I would be very interested in hearing your opinion given the number of tips you've tried on this set.