I use W W Livestock panels. Have been for 15 yrs. I used to use economy gates and panels that wrap up like paper when cattle or horses or pickup got into them. But since going to the heavy duty corral panels and gates, I don't have a gate or panel on the place with dent in them.. Well I do have 1. My nephew was helping me set some gates about a month ago. We used a skid steer to make a trench to bury the high tensile coated wire that goes from one side of gate to other. He wanted to back fill the trench and was showing off and caught the bottom corner of the gate and put a dent in it with the bucket. It didn't even crease the tube. I tried to take the bucket and push back down to straighten it out and couldn't do it. It was close to the hinge and wouldn't budge. Those are some super duper tough panels. They are expensive, but they are 20+ yr gates. They are 2 times heaver than any I have tried before also, so make sure your post are drove into the ground or concreted. I haven't replaced the first gate yet and it is over 15 yrs old. I also have the galvenized horse stalls from W W as well. The new gates are pre-galvenized. Not dipped. They are awesome.