One more thing, open youtube videos posted by JACKAL and email those who posted them, may be they are the owners of those P100) on mattracks or know those people and could connect u with them . It worked for me when I was searching online and emailed all youtube video authors and was able to find out about their experience with tracks.
I vote for Mattracks Maxim personally for P700 and P1000 but for P500 Camo is better for deep snow or EZ Mattracks for all around application