jodyjohnson
Adventurer
With only 2 players I'd go Cleric/Rogue and Ranger/Wizard.
Both have good skill points, moderate HP (d8), medium or better BAB, can heal (spells or CLW wands), all good saves, both possibly stealthy, and ranged magic. Ranger brings in some pet damage. Their combat ability is average which also means that normally you set up normal EL fights rather than imbalanced fights (tough enough to challenge one, but would kill the other).
Both have good skill points, moderate HP (d8), medium or better BAB, can heal (spells or CLW wands), all good saves, both possibly stealthy, and ranged magic. Ranger brings in some pet damage. Their combat ability is average which also means that normally you set up normal EL fights rather than imbalanced fights (tough enough to challenge one, but would kill the other).