I've got a set of 25" CST Abuzz on the Rancher. I pull a couple hundred lbs of kids in the snow, pull an atv harrow doing maintenance on mountain bike trails, chase cows through the pasture and cruise gravel roads and I've not been disappointed yet. I do not do any serious mud bogging so I didn't buy a tire based on mud performance, but these do handle sloppy cattle corrals without any problem.
Also have a set of stock Carlisle ACT's on a polaris ranger crew. that just sees mostly soft prairie riding towing 6-700lbs of trail maintenance gear and they do well too.