The Miche headset 1" threadless is one of the best headsets I have used as it cheap and light. Highly recomended. The sealing is excellent on these as well. I use one in my winter bike and every year I stripe the headset down and them wonder why I bothered as the it perfect inside, even the grease is uncontaminated.
The headset comes with a 1" compression bung instead of a star nut just in case you have a carbon steerer on your fork. Nice touch as 1" compression bungs are hard to find.