Tidus - Yuna - Auron (sometimes Kimahri)

Two powerful physical attackers and a healer (with powerful magical capabilities). I use Kimahri mostly because he is cool, but kinda underdeveloped in my game. He has an undefinite pathway in the Sphere Grid (mainly because he works like a Lancer and a Blue Mage at the same time), so he ends up not that powerful if you're not willing to make every character go through the entire SG...