I used to work for a plaque manufacturer and we routinely ran over 10,000 feet of sheeted mdf that came 97 by 49 inches, in half inch or 3/8 inch thickness, through an old Rockwell 10 inch table saw every day. We probably should have had fancier equipment but that’s the way the aviation engineer that started the company did things. We always put a board and a clamp on the other side of the fence, front and rear to help reduce the chance of the fence moving by being bumped too hard with sheet goods, and it actually worked pretty well, maybe you are already doing this, but it can really help keep the fence exactly where you set it. I think both Powermatic and Sawstop are pretty good saws, don’t think you can go wrong with either one for what you have in mind.