My mesmer, its the one with the longest time on it, about 1500 hours now, and completed the protector and exploration on it first, most fun with shut down, and always a wierd new way to kill things,
yes they have a downside, they aren't accepted into groups so much, and a bad build is a total disaster.
But I enjoy the hard work and the constanty play on builds, a lot of the other classes i find are too easy, not enough work hit a few butons repetively is not fun for me, and up close fighting it too stressful, i always appreceated the ability to stand back fromt he fight throw in a few hits or interupts and when it goes wrong have the ability to run away!
