First of all, thanks for all the great info here. I lost my 10 year old Sony Fontopia earbuds and went a little berzerk during the Black Friday sales. Now I own a pair of Triple-fi's (plus a Monster Turbine which I will probably return unopened) and an Meelec M6 which is on the way.
I've been playing with tips for the TF10 and just bought the Sony hybrids. I am probably most comfortable with the mediums, but the large may be a little better for one ear.
I felt like the Complys that came with the TF10 might have been a little small (maybe I didn't give them long enough to expand fully but they didn't hold in place as well as the silicones).
The Monster foam supertips seem very appealing (comfort/isolation is most important - these sound so much better than what I am used to!). How do they compare in size to the Sonys? I think these will fit both the TF10 and the M6, so I'd rather not buy another sampler pack with many useless pieces.