I don't mean the difference in the pistols. I want to try IDPA and wanted to use a P7M10. My wife was game, so we are getting her a Glock 35. The P7s currently compete in Stock, but when the new rule book comes out the P7s will be limited to Enhanced. What are the differences between these two groups? I don't mean equipment differences. Is the competition in Enhanced stiffer? Is the course different? Do all ranges that handle IDPA run both classifications, or do some just run the "Stock?"