We have had the Rawhide corral for about a year now. It is one heavy built unit. We have used several times for preconditioning calves, weaning calves, hauling cows home from cornstalks, AIing, etc. I think with very little exception it was the best money ever spent on our place. We can set it down and roll the panels out and be ready to go in about 20 minutes. The claim of one man ten minutes is stretching it a bit. If you were on completely level ground that might work but our pastures usually have brush and cow pies in the way that make the rolling a little bit harder. We usually have two guys pushing the panels because they are so heavy. Each panel is well in excess of 100lbs I think. That is a good thing, except for when you need to unpin the things and move them without the wheels.
We have ours paired with a Parasal alleyway and you would be hard pressed to build a nicer permanent working facility.
The few points that I would fix if I could are the electric over hydraulic system. It works great, except our battery is always dead. I think I am going to mount a solar panel trickle charger on it to keep the battery topped off. The other thing I would do is get three extra panels for the smaller pen. We had a group of 138 pairs at one of our places and they fit but we had to really push them. That was the biggest hassle of the day. If we had had three more panels it would of certainly helped the process of getting them pinned. If you go with the Rawhide put the support bars down when you are bringing the cattle into it and as soon as you are done pinning lift the bars into storage. That may not make much sense now, but if you look at it you will see what I mean. We were talking to someone else about theirs and they had bent a couple of panels because they had left the supports down once the corral was full.
If you want any more specific info I can try to answer your questions. We couldn't be much happier. They aren't real cheap but they are built extremely heavy and it should last for years.