Summary: No doubt the sound is very good. The fit could be better - am using the large buds. Not sure if I can tell the difference with the sound-insulating ones - they are less squishy so can become uncomfortable over a period. I used these earphones for 35hrs each way long-haul from UK to Brisbane.
Summary: they are a bit pricey. but once you get over that initial shock the quality of the product is very good. i was original going to by Dr Beats in ear but due to bad reviews i got these bad boys instead.