I have the professional series. The industrial series is longer and heavier.
The professional series is for machines 5000 pounds or less. This worried me a little before I saw it. I talked to someone on the phone, told them my machines weight with loader and filled tires and they recommended the industrial because they didn't think I could hurt that one. I commented that if I did something stupid with the industrial one I could pop my curl cylinders because it's three times as long as the bucket my curl cylinders were designed for. They understood my concern and said that they didn't think I'd hurt the professional series as long as I wasn't ripping up sidewalks with rebar. After I had it in front of me I realized there was just about no way I would ever damage this thing other than popping a weld if it happened to have a bad weld. I think it is well matched to my machines size. Robust enough, but not unnecessarily heavy.
Incidentally I did a test for the curl cylinders that make me think I did get the right length. I dumped the bucked so it was straight down with the tip buried in the ground. I put the tractor in 4WD 1st gear at idle (0.4 mph). I let out the clutch and tried to curl the bucket. The tractor didn't move the curl cylinders didn't move. I was hitting the relief valve but the tractor couldn't extend the cylinders anymore than they were with the valve open. I was actually expecting the cylinders pull the bucket back more and extend the cylinders but it didn't happen. So this means that with this length bucket, I'm unlikely to ever hurt the loader even if I slowly run into a huge underground rock with the valve closed and bucket pointed straight down. In that scenario pressure in the cylinders is unlikely to go much over normal operating pressures before the wheels spin, so well below what would hurt anything. With a longer bucket I'll guessing the tractor could have pushed forward and extended the curl cylinders more and I would have needed to be very careful with it.