My headset was a feeling a bit dodgy so I stripped it to find this.
It was a new United Value which I paid a tenner for a short while ago, I was disapointed it didn't have sealed bearings but decided to run it anyway, I guess you get what you pay for.
Anyway I'm tight so I decided to buy this richey headset for 12 quid from chainreaction as I seen it had sealed bearings, bit of a bargain I think and free postage.