The issue of buffing or not is rather mute. We, as the realativistic gods of our little fantasy demi-planes, have the power to do what we want. The best possible system is to discuss with your players ahead of time what you plan to do and then be as consistant as possible (Give a monster a fighting chance!). If your group is cool, they should be willing to give you the benifit of the doubt on whichever side of the issue you stand. If you don't want it, don't use it. If someone else wants it, let them use it in their own campaign. If your players are whiners, follow scholz's lead and hand out creative, original swag. Just be sure the players have to pry it from the cold, dead fingers, claws, talons, psuedopods, etc. of your villians.