With Marko, who opines that “the medieval cruciform one-handers were the zenith of fighting sword designs”.
Personally, I’d go with a Roman style Gladius myself; but that’s because I value the ability to extend my reach without making the weapon overly large. I don’t really advocate an edged weapon for home defense, but it does beat a pocket full of rocks.
I like the gladius because generally, the learning curve is pretty short for it, to quote Zorro “the pointy end goes in the other man”. With a gladius, it’s pretty much that simple. Thrust, parry, thrust. Since I enjoy simplicity and ease of function in fighting weapons, if I were forced to recommend an edged weapon for home defense, I’d go gladius all the way.