I have owned both and I prefer the SS for the safety aspect (in fact, I sold the Unisaw to buy the SS). I am tall (6'5") and any geometry difference is unnoticed by me. I am actually thinking of buying an older cheap Unisaw again and dedicating it solely to dadoing and use the SS for all other operations. Relatively, dadoing is a pretty safe operation and IMO doesn't really require the SS safety feature.....a dedicated Unisaw would avoid having to change the blades and cartridge in the SS every time I want to do a dado. My $0.02 bob