Final fantasy 8 help?

I always go with Squall, Irvine, Zell. Basically, just on the strength of their Limit Breaks. Once you have Lionheart then Squall's in basically an insta-win. Irvine's is pretty good, even with half-decent ammo. Zell's is just insane. If you use it nearly as much as I do then you'll learn the combo map and can dish out way more than Lionheart.