Went with Wizard and I do not regret it a bit. TR/Firebird/DMO are all revelant enough to create an extremely fun (and powerful) T6 speedfarming build and will allow for at least some GR 'progress'.
The build variety is wonderful, the involvement of the Tal set is great, certain key items change up the playstyle nicely and we're in demand for GR group play.
Can't go wrong with Wizards this season