I'm with Marty. Polaris kits are convenient. A bit spendy, but how often do you change fluids. My take away from the numerous threads on this topic is, any name brand oil, properly speced, and changed per the manufacturer's recommendations will be just fine. Pyro's got the right of it, seems most members have a dog in this fight. Good luck with your decision.
Side note: I change my fluids every 50 hours per the extreme duty maintenance schedule and have over 10000 miles on my rig, and still purring.