Pros: Fit. Excellent sound with Black filters directly from my iPhone.
Cons: Filters need to be replaced - not sure how often or how expensivce they are.
Upgraded from (a lot) of sony low/mid end earphones and headphones to SRH840, the sound was ok but the fit was aweful. Was looking for a small good quality earphones that was not very expensive. These fit the bill perfectly.
They disappear in my ears - I just hear the music and forget about the earphones. Clarity at low volume is amazing. Not as much bass I am used to with sony and M6 earphones but I like the no booming bass of PFE112 to other earphones. The grey filters were too bright but Black ones are good with a flat EQ.
This is my first high quality earphones I hope to stick to it for atleast a year :) before upgraditis hits me.