I have to add my 2 cents worth. I would not recommend EVER using any kind of gear drive tractor for logging, stump pulling, etc., unless it is weighted so heavily in the front that it cannot possibly do a wheelie, especially when pulling a log that if lifted up so the pulling force goes to the top link. If the tractor does a wheelie, you have 90 degrees of rotation before the tractor flips over backwards, and my bet is that you won't get your foot to the clutch that fast with a gear drive tractor. With an HST, you just have to stop pressing on the pedal. In terms of pulling power, the pressure relief valve on an HST prevents you from developing more torque than the axles and transmission are designed to handle. With a gear drive, if you really load it up, the engine torque multiplied by the gear ratio in low range will exceed what they axle can handle, and you will break it. Your only torque limiting safety mechanism is tire slippage. With stock weight, the tires will slip before anything breaks. But if you load the tires, add wheel weights and a load-transferring rear implement such as a logging arrangement, you can develop enough torque to break the axle. So how much can an HST pull? On my Mahindra 5035 HST, I have managed to break a poly tow rope with a rated breaking strength of 20,000 lb. I have broken 3/8" proof chain, which has a working load of 2600 lb and a breaking strength of about 10,000 lb. So far, I have not broken 3/8" grade 70 chain, which I think is rated at something like 5400# working load, but i have stretched it. So, what an HST can pull is really based on what the manufacturer has designed it to do. A gear drive tractor with the same axle and bearings cannot pull more without going over the manufacturer's design limits, which the user does at his own risk. Back on the safety aspects, when working in the woods, I have had sharp logs and branches pop up and try to hit me in the face or impale me. I have gotten bruised pretty badly by that. But the HST saved me from potentially lethal results. I wish I had the money to put on a forestry package, which has a full cage around the operator, but I do not. I did invest in a custom-made skid plate to protect the tractor underside.