Omnislash does S-loads of damage but is very boring to look at. I hate it. Yuffie's Bloodfest looked very cool. As did Lionhart. Blasting Zone was also pretty cool. Blowing a Texas-size hole into the ozone layer daily is quite fun. Freya trance was loads of fun. Raining multiple lances from the sky. Garnet also had a nice trance, summon, step back, watch it work. Cait Sith's limits were garbage, as was Quina's trance. Steiner looked great in Trance, but it wasn't all that useful. Vincent's limits were loads of fun, especially Hellmasker. Highwind was fun to watch, as was Catastrophe. But, I guess I'd have to say my all time favorite is Eiko's, mainly cause she grows wings and you can heal, then attack. It just makes sense I suppose.