I have the 65t and 75t Elite Sport models. I lost my 75t buds (ahh!) and decided to try the 85t. Even with the biggest tip, I can't get them to stay in my ear long enough to say they're better. They are heavier, thicker and to be honest I don't find the sound quality as good (certainly not better) than the 75t. Even using an equalizer, something with high frequencies just doesn't work. The body is slightly larger (taller), but not by much. Many professional and user reviews praise the good fit and excellent sound quality. If older models don't fit exactly, they will likely be worse due to weight/height gains. I'll go back to my 65 ton kidneys until I find something else.
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