Guild Wars 2

im just wondering what would be the best/easiest (leveling i mean by saying easiest) to roll with my friend thats an ele either a guardian which i know is a very good option as ive been told and a necro also i was thinking maybe and engineer but its most likely a guardian or necro. please i need some advice and pros and cons to the two of these professions.

i am having massive amounts of trouble figuring put who i want to level, i leveled a warrior for a bit but found i was dying way to often. i am now going to start from scratch with a friend and he is going to play an ele and i was wondering out of a necro or a engineer what would be the best pick to play alongside an ele i really am happy to play either one they look awesome but i was just wondering which one is the easiest, best, best for going with an ele, most fun, and has the best end game. please answer i am having a lot of trouble, thank you.