$500內點簡好?

小弟想買隻入耳式耳筒
但唔知買邊隻好
1.Jays a-JAYS Three
2.TDK i-900
3.SoundMagic PL-50
4.SoundMagic PL-30
又或者,各位ching有咩好介紹?
THX