Hi fellas, I am joining in to this thread a little late, so I apologize if I miss something already said. Just wanted to add that TRYGG chains from Finland are, IMHO, the industry standard. I have had them for 20 years or so on various tractors and they just do not fail. Currently have them front and rear on my Branson 6640, pushing an 84" snow pusher and am 84" drag blower. It is unstoppable and has directional control with the pusher down. Relatively easy to install and remove and they sell a stretching tool to make hook up easy. They are not cheap, but in my experience economical solutions consume in time what they conserve in cost.
Hope that is useful.