I agree with everything Matt has said above. I got my saw at an auction dirt cheap, no one else bid on it. It's all cast iron and steel and very heavy duty. Back in the day radial arm saws where very popular and every dad had one in his garage, they could do anything! This was all before the popularity of table saws and the prices coming down on them. Sears really made table saws affordable. My radial saw will actually be used for cross cutting due to its wide capacity. It will be very helpful in breaking down the wide boards that I mill. As Matt said, it's easier to pull the saw head than it is to move a large heavy board across a table saw. The way I'm setting mine up to also use the miter saw station fence will also be helpful with long wide boards. I will still use my table saw for dadoes, and ripping, and for breaking down plywood. But this heavy duty r.a.s. will have its use and purpose in my shop.
Dewalt made a heavy duty 12" r.a.s and if I had the shop space for one I would be looking for one. My shop is very full and nearly complete, there's only a couple power tools on my list, a mortiser, and a belt disc sander are on my radar. And someday a bigger spiral head planer.