RE: The Smashers ~ Tournament info in Post #348!! ~ Worlds Players can be Subs
Peach's FS is really only difficult to avoid if you can't get on the ledge when it's used. Considering the camera zooms in on her it's easy to lose track of your character, and you can't stay airborne forever. Also, consider this: hers is the only one that lets you heal. I'd say that it's not the worst out of all of them, but it does have its flaws.
Sonic's is the best, can effortlessly take two stocks if you use it right, and it's not even that hard to use, unlike Pikachu's which takes actual skill to use effectively.
Also I don't know if Luigi's FJP OHKOs Dedede at 0%, I remember testing this but maybe he was metal. Ruins everyone else though.
To use Mario's FS effectively it's best used if you jump in the air slightly before using it. The same goes with PT's. That way they can't dodge it.
I think all Final Smashes are fun to use. Well, except Jigglypuff's (whose is also one of the best).