Tidus' sigil made me so furious I almost got a limit break. I was so ready to punch the wall everytime I got a seagull in the face. God. I was so close all the time too, making it even worse.

Kimahri's butterfly thing I only tried a few times and quickly gave up. His sigil didn't really interest me.

Lulu's gave me hell too, as I was sitting there so tense waiting for the lightning to drop on me. smurfing up near the end would've driven me off a cliff for sure. I think I only got above 100 once.

In the end I got the sigils of Tidus, Yuna, Wakka and Rikku and just stuck to using those characters. I'd say Tidus' sigil gave me the most grief and that Lulu's is the hardest.