D/D or S/D ? & which attributes?
Are you talking PvE, sPvP, WvW?
everything…
PvE is easy. Best IMO is this: http://gw2skills.net/editor/?vYAQRAoY8al8Mp6pFOxxJ0PNRs9on7kn+HArODc2SA-zwxAY/BRT+DNVIQJvioxWcLiGruGT5SEVDA-e
sPvP depends. There are 3 Meta builds atm but you don’t need to follow them. Right now for all 3 meta builds I think the ones with the Sword are the strongest. S/P because of the stun/evade/damage all in the same skill, Pistol Whip and S/D because of the evades. I never worked with S/D so I use S/P. I also like to try D/P sometimes but I think it’s more difficult and I’m already having a hard time with these.
WvW also depends. Condi is really stong in small groups and solo but kinda useless to take camps alone and in zergs is totally useless. Because of these condi builds will mostly be just for Duels when you are playing solo. I prefer Backstab build. Most Backstab builds will use Hidden Killer over Executioner and because of this most of them sacrifice Precision for Toughness and Vitality. Unless you want to be full zerker. It’s also possible but if you get caugh death is certain.