Soulbeast is another good option. There are gvg builds for power soulbeast floating around that might suit you in small scale stuff. Condi soulbeast is another good option which can bring a lot of immob to group fights which can have a lot of value. Willbender is another build that might fit. Lots of mobility, big aoes, and enough sustain to
Play necromancer if you have the expansions strong solo class. If you don't have any expansions, play guardian. If you want to test classes, make sure to go to the PvP lobby with a new character with whatever class, and you can try out all the skills there at max level to get a feel of it.
Well I know at least what's the easiest PvE class. Soulbeast, without a question. One click immortal pet skill, dead -> 100% hp on 2s cd (since the pet comes back at 100% hp the soulbeast cd doesnt really matter, just the reset) I play mine with condi sb/sb just for extra ease of play. Its so amazingly broken.
SnFbbA6.