I use a K370 before, buy from david aka E1-AKG

im very satisfied the sound quality, from high to low, its perform very well,
especially when u listen a high quality sound format u can feel its like the person sing in front of u!!

n all the instrument is clean n clear, won't like those chipo brand u will feel all instrument is mix n mass together n sound so noisy. but keep in mind that if u listen to low quality sound format u will feel the quality is worst n not much different, the best i recommend is 190kbp++ try use as high quality as u can....

for me its hard to tell how nice the sound quality from a reasonable price product, but the only bad thing is no volume control on the mic, a slightly heavy on the earphone so u can't use it for sport(sometimes it drop out) and of course the other sad thing is u can't share the wonderful sound with the ppl surround u.....