Priests solo very well. They have really nice tools for soloing and can handle just about any mob. I solo with my priest all the time, i'm afraid she's going to be a bit overwhelmed when she does group. Soloing is not difficult with any class at the moment. You will have your natural learning curve to come up with your solo strategy, but once you get that down, any class can solo mobs of equal level. Some classes have an easier time soloing mobs of higher level than others at the moment, but class balancing is not nearly complete.
