And here it is:
http://www.hiltonheadmusic.com/Comparison.htm

You can only get to this page by following this link - there is no link from my front page. This page is temporary and will be removed in the near future to save my webspace so check it out now.

This page has the comparison files I made between the 9000 Pro's "Live!Standard" Kit and the PLG150-DR's "Live Drums A". There are quite a few kits and mixtures of drums from various kits to choose from and I haven't had the DR long enough to makes demos of all the possible combinations, but this'll give you the idea. BTW/FYI: you cannot combine different drums from different kits to make your own custom kit (awww), but there's enough combos already that I don't think this is a drawback. Also, unlike the Live! drums many of the DR drums are sampled with effects.

Enjoy!