[Roto13]

Basically, I think there are three sets of items.

1) Any item that people automatically run away from when someone picks up is a good one to turn off. :P The hammers and the star, specifically. The Home Run Bat can be cheap, but only if you suck. xD

2) Random items like Pokeballs and Assist Trophies. Some of those are overpowered and can really lay down some hurt. You're more likely to get something balanced or just plain weak, though, so these aren't so bad.

3) Everything else.

I think turning off the type 1 items is a good idea in any tournament.