Few years ago, I bough the Shure 115SE. It was quite good at sound isolation but sometimes I felt pain wearing it for a long time. Also, I could hear people talking loudly. After checking many review, I read that the Etymotic is the best for sound isolation. Some people mentioned that while wearing it, they could not hear anything from the outside world. So, I bought the HF-5 yesterday. Although the triple-fringe eartip fit my right ear, the left doesn't. It falls often. After some twisting and pushing, I managed to get both in. However, I felt pain sometimes. Moreover, sound isolation was similar to that of Shure 115SE. I then bought the Comply P-series eartips today. I tried it for 10 minutes. It seems to be better (more comfortable and better sound isolation) than those that came with the Etymotic. I wonder if I wasted money on the HF-5 because I could put the P-series earipts to my old Shure 115SE. Any thought on that?
Also, sales told me that the Shure 215 and the Westone W40 are better at sound isolation than the Etymotic earphones. Is this true?