this is honestly the best value phone i have ever bought. it's not technically a 'walkman' phone but i really dont understand why as it has expandable memory and comes with a 256 mb card anyway, and you can multitask e.g. listen to music while taking photos/ texting etc. so i dont see what benefits i'd get from buying a much more expensive walkman phone.
the free speakers are actually incredible - the quality bass and volume are brilliant and the speakers are so small you can basically take them anywhere.
unlike the old sony ericsson phones, i haven't noticed any sluggishness in menu transition etc. and the dedicated mp3 player, volume and camera buttons are incredibly useful.
the supplied headphones are good quality but the covers that come with them i cant seem to fit on the headphones and therefore they sometimes fall out of my ears =p
also i'd recommend the 10% off a 1gb memory card deal, as this card also comes with an adapter which you can use to transfer data directly to the card from your pc if you have a card reader, as this is faster than bluetooth or the data cable supplied with the phone
overall an amazing phone even if it was twice the price and well worth buying!