Jaymus it all boils down to how much you want to spend. Like doitmyself says, lawnsite.com is probably the busiest OPE site around. Some commerical ZTRs are so wide, you'd really have to get crazy to roll it on it's side. You can get excellent traction out of a lawn/garden tractor with weights and chains or ag tires installed. It's all specific to YOUR conditions. John Deere and Simplicity make 4x4 garden tractors for ~$10-12K+. You can also get a 4x4, diesel compact utility tractor like a Kioti or others with a mid mount (or drag behind mower) for $10K-12K. If keeping cost to a minimum is a must, get a dealer supported Cub 1500 series with a 54", with wheel wts and chains or a Sears/Husqvarna unit with a 54". Any of those would be $3K or less.