I've got 8-10K on my Salsa Las Cruces fork, which I believe is one of the Winwoods. No complaints, other than given a choice I wouldn't have the canti studs. While I personally dislike the look of the bontrager / wound up style forks, I don't know that the Winwood would be any better functionally.

2+ years ago I was working on this list of disc forks - http://www.bikeforums.net/showthread.php?t=270819
I'm sure things have changed since then though.