What is the best zeta ability for the tournament?

I'm thinking Barriss. In arena you can easily run out of time if your opponent has a Barriss with zeta. That's not a problem in the tournament, since there's not a limit of time for the battle... until the last minutes. When you are pushing for the top positions, last hour (and las minutes even more) is a madness. Everybody is burning their last ally points and doing as many battles as fast as they can. So imagine that you face a team that already can make you waste 6,7,8 minutes in the battle. I think that's very important and may be decisive in the photo-finish.