I have owned both 4WD and 2WD with positraction. I have bass fished for the past 25 years and really only needed to use 4 WD three times, and I was very pleased that I was towing with a 4WD vehicle all three times. I needed 4 WD once on the Neuce River in New Bern, North Carolina when the ramp was very slick and the tires just spun in 2WD. Once I hit the 4WD button, the boat and rig just walked right on up. The second time I required 4WD was during a Federation tournament in Alabama where we parked the vehicles in a huge grass field. During the tournament it poured rain most of the day and the field ended up being a mud whole. I got out fine, though the boat was filthy dirty from all of the mud that the tires threw on it in trying to get out of the field. Those of us with 4WD vehicles ended up unhooking our boats after making it to pavement in order to assist in retrieving the rigs with 2 WD vehicles that were stuck in the mud. It made for an interesting day. The third time I needed 4WD was on Lake Eufaula in Alabama during low water conditions when my friend that was backing me into the water backed the boat down too far and dropped the trailer wheels on my ranger off the end of the ramp. The truck just spun in 2WD, but pulled the trailer right out when placed in 4WD. The fiberglass fenders on my ranger did get damaged in the process. In short, I very rarely needed to have gone to the expense of 4WD vehicles, but I was thrilled the three times that I needed 4WD and only had to hit a button to engage 4WD instead of having to call a friend with a 4WD vehicle to come assist me in getting out of a jam. My next Avalanche will have 4WD, that is, if they continue to make 4WD trucks in the future. Corky