Just for fun, a pure 10th level rogue with +3 StrMod, +7/+2 BAB, Ambidexterity, Two Weapon Fighting, Weapon Focus Shortsword.
Case 1: Two +1 elemental short swords
23.5, 21.8, 20.2, 18.5, 16.9, 15.2, 13.6, 11.9, 10.3, 8.6, 7
Case 2: Two +1 elemental short swords with +5d6 sneak attack
61.1...