Arcane Trickster 3
Eldritch Knight 11 Oath of Ancients 13 - And, uh, I do cast spells with Paladins. Sometimes, they are the better use of a spell slot than a Smite, believe it or not.
Arcane Trickster 4-2=2 Eldritch Knight 9+1=10
Oath of Ancients 13
I guess that at the end of the day, extra feats are more versatile than extra sneak attack damage. Sorry Trickster, you know I love you, but I'm staying with the Knight.