Damon, of course. Stefan is a whimpy Edward-wannabe. (Although he's better than Eddie).

i think their both stronger when they have blood.. and i love stefan his not edward wanna be i think stefan has his own thing ! monrose ! :x

In terms of emotional strength Stefan is better. But Damon is more experienced so he is stronger mentally and somehow physically. Then again, Blood helps them so there is no saying that one is stronger physically really

but now, when Stefan stars drink blood.. everything can happen.

both....,but i LOVE more Stefen ♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥

I think they're both really strong because of one scene where Stefan kicked Damon's ass. :)

"Stronger" But in what sense of the word?
PHYSICALLY, yes, Damon is stronger at this moment.
MENTALLY, Stefan is way stronger than Damon; Damon cannot even last an day without drinking human blood.
CHARACTER-WISE, Damon is, of course, the stronger as his character is written to be the more "stand-offish" type of the whole cast of characters.