Sound quality is best none of then is othe manufacture comapre the south. Walkyman is very user friendly in a nature to any one user interface is good to any buyer.feature of these Sony Walkman fm tune recording is good any automatic search the fm channel these fm record is good sound gives .Product has user interface with windows os .You can use as usb.Realibility is name of the knows the sony brand must take his popularity. in the product is best price for ruppes for around I purchased 2300 rs. its gives sony barnd at mp3 music is best.