In my opinion, the Shannon vs Jennifer fight was the best fight ever put out by Crystal. I believe it was featured in video magazine 7. Does that sound right?
In some of the Crystal fights, it seems that some rules were in place, such as no closed fist punches to the face, etc. That's not all the Crystal fights, but it does seem like some of them were like that. And in some of their fights, the girls seemed somewhat hesitant to really go at each other. But Shannon and Jennifer both went at each other with no apparent holds barred. I particularly loved it when they got a good hold on each other, and really went at each other.
I would be very curious to know if they ever fought again off camera.