I've always preferred Setina because they are cheaper and their customer service is top notch, not really a noticeable difference between the two brands! But the biggest reason i chose them is because they are the only ones that still make things for the old 90's caprices!
I too have used Setina for 20+ years and Go Rhino, Setina tests all their products if it shall be used for public safety and pushing on vehicles, I've never had a problem with Setina's products. Go Rhino on the other hand their powder coating is much lighter than the Setina, but you can choose a heavier coating for a fee. Setina is the way to go.
I've taken off alot of Go-rhino's in the last 10 years, and they are heavily rusted after 5 years of service.
And most times you have to cut the bolt heads off with a torch.
On the other hand, Setina is not as bad. But lately the powered coating is on the thin side.
I have a PB400 on my F-150 and had to repaint the mounts after a year on. I used etching primer and oil base paint, and after 2 years I started seeing rust around the bolts. Probably due to the serrated nuts cutting into the mounts. But for ease of mounting and customer service, Setina is the way to go.