I found a wonderful guide for dailies >> http://dulfy.net/2013/01/29/gw2-daily-achievements-guide/
But I belive that Gendarran Fields is the best map to achive 80% of dailies.
The dailies are >>Recycler , Leveler , Feast , Gatherer , Group Events , Kills , Kill Variety , Veteran Killer ( general and krytan ) , Aquatic Slayer , Champion Slayer , Condition Applier , Condition Remover , Dodger , Events ( general and krytan ) , Event Mentor.
Puzzle Jumper , Laurel Vendor and Crafter > At Lion arch which is next to Gendarran Fields .
Events normal/group and champions have very short spawning time , as for Dodger ( you can do it by standing in front of 3 Harathi Sharpshooters without attacking them , you will achieve this daily within seconds ).
Recycler and Feast as you have trading posts in this map.With many events will will achive Leveler easily too.
Your thoughts ?
All 80es > MM necro is my best ,cleric
guard ,nades eng ,Trap thief \ranger ,signet\shout warrior, zerk mes\ele & shiro rev.