First of all i hate giving bad or mediocre review unless entirely merited,
I was really looking forward to getting these because of the great reviews.
To me they just don't fit right no matter which bud you try,S ,M or L sizes.In fact they are very uncomfortable so that you're always aware that they are there,totally opposite to hype about them being the perfect shape for the ear canal.They felt a bit sore and left my ears feeling irritated.If you are sitting in the one spot and use them for short periods you might not even notice this but i needed something to use on the go for several hours at a time.
Having said this my wife tried them and had no problems.
On the good side,the sound quality is outstanding (one extra star for that!!!)once you fiddle around with the fit and they "burn in".Build quality seems pretty good too.
Cons-Hard to get right position in ear,horrible comfort,causes ears to become sore.
Pros-Good build quality,excellent sound reproduction akin to much more expensive sets.
So overall ,good for commuting or laptop use but not good for long walks ,gym or jogging.