swmtnbiker
Previously known as dpippel
I just did an unamped head-to-head on both and, after being an ER-4P owner for over 5 years, decided to keep the HF5. While the 4Ps strengths are well known and certainly a factor, I simply found myself ENJOYING the music more through the HF5. I'm calling it the "Groovalizer" of the Ety IEM line. Very musical and involving to me, and the fact that it's priced at $50+ less than the 4P doesn't hurt either.
As for build quality, the 4P cetainly seems more robust than HF5. The removable cable is a plus for some and it feels like it will take more abuse than the HF5's thinner and much lighter wire. I find the 4P cable and clip to be more cumbersome than that of the HF5. Durability-wise, since both products carry the same 2 year warranty and Etymotic is well respected for its customer service, I'm not really worried about the longevity of the HF5.
As for build quality, the 4P cetainly seems more robust than HF5. The removable cable is a plus for some and it feels like it will take more abuse than the HF5's thinner and much lighter wire. I find the 4P cable and clip to be more cumbersome than that of the HF5. Durability-wise, since both products carry the same 2 year warranty and Etymotic is well respected for its customer service, I'm not really worried about the longevity of the HF5.