I had both players tuned to NPR at the same time, and despite WMP 15 or 20 sec. delay I have to say that it never skipped... that is until it quit unexpectedly.
All in all I was disappointed with Quicktime's player performance because it skipped a lot in comparison. (I have a 56k dial-up connection, by the way)
I really hope Apple addresses the skipping problem and sudden loss of audio or video, which often happens. Does anybody know why this happens and why it hasn't been corrected?