no wooden coaster (except maybe The Beast) could ever be better than Son of Beast.
Maybe if you have no nerves in your back...
well, i am 200% sure that i have nerves in my back and Son of Beast is still (as of pre-Diamondback) my favorite roller coaster at Kings Island, and my favorite wooden roller coaster out of all that i have rode.
It's hard to say that a coaster with such a horrid reputation for being rough is good. And before the "oh you have to sit in the right spot and brace yourself", the gp wouldn't event think of that... and coasters aren't made only for enthusiasts.
to tell you the complete truth i haven't rode Son of Beast in the same spot twice with either sets of trains, and i love it just as much in one spot as i do in another.