Hello all and thanks. I'm looking into a single BA iem with replaceable cable and wanted to know how these 2 compare. Etymotic ER4 and the Final audio F7200? You could also include the ERa and the F4100 if you got experience with them.

Does anyone have experience with both IEMs? I tried Googling and looked here on Head-fi, but I can't seem to find if the new XR is a big improvement over the older 4p. I can get Er4P new for $200 and Er4XR new for $300. Is the $100 US worth the upgrade? The 4P come with an adapter that turns...