Dozer
I don't have tracks but here is my .02 cents, I have researched my A^& off about tracks and what are the "BEST", well the best is what is suited to what you are driving in, for deep snow a closed type of track(IE rubber or plastic like a snowmobile) plastick would not be good on ice, rubber is better, if they didn't work for snow than sleds would not use them, for mud you need to have them clean out and a open style track would be best. on rocks a rubber track will do good, but a metal channel would not be as good.. So in a nut shell the "BEST" track for you is based on the condition you drive in. ask 10ppl and you will get 10 diff responses as there conditions are not the same as yours...
best advice is search the forums and do the research and decide what YOU think will work best for your conditions....