The real problem with the balance patches now is Upgrads and stat inflation which Devs wont solve anytime soon so try to survive as much as you can or play a class that you actually like and is viable in PvP as well as PvE(Almost all of them are now) and go crack some heads.
By far Agi Dhans, Str Humans and Rangers are in the top of the food chain give one of those a shot if you like it go for it if not wait for the final patch and go for a test again. I took almost a year to test out all the classes I could think of before choosing one. My first one was Agi Dhan then Int Mage(Lock), then Priest before going Str scout, dex scout, str pred, agi pred and well you know the rest.
Here is a homework if you like: Try to play every class and choose what is the one you found more appealing to you. It is not easy but should give you an idea.
Sorry if i repeat myself ><