From all reports (I know xreckor and ausastronomer will chime in here
), the 10mm Pentax XW is one of the finest going around at that focal length.
You've made a great purchase, and will be handy for planets when the seeing is only fair, barlowed on the planets for when the seeing is very good, and great as an alround high power DSO eyepiece for globs, galaxies and PN's.
Nice choice!