Who do te think is the most powerful dragon slayer from fairy tail.....

I'm sure it ebbs and flows with time and experience, but for the long run, it's gotta be Natsu.

Natsu <3

Definetly Natsu.

I think is Natsu thats is the powerful dragon slayer too!!

On a normal, regular giorno the answer will always be Laxus. He's been noted many times to be a monster, is classed as one of the strongest in the Fairy Tail guild, behind probably only Gildarts, and he's been shown to be several times stronger than Natsu on numerous occasions.

The only reason Natsu may seem più powerful than Laxus sometimes is because he's the main character, he's a major link and he's able to whip out link as the plot demands.