First time I used it, it did a GREAT job.  No streaks, no smears.  I think the secret is to use zero pressure, just the tips.  BTW, I read the reviews and placed my new duster on newspaper (changed it twice a day) for a couple of days.  I found that if I turned the duster upside down and placed the newspaper on it, then flipped everything over, I got the duster to spread evenly on the newspaper.