I had a one spot foxface and a gold spot rabbitfish in my tank. I liked both, but the foxface was always a timid fish and lacked personality IMO. Unfortunately our foxface randomly passed away a while back. My rabbitfish is full of personality and definitely not shy at all. There has been a few times his curiosity and stomach has gotten him a little too close for comfort while I've been working in the tank. Even nibbling on my arm once or twice to see if I was edible. Cuzco is the puppy dog of our tank and we love him. He holds his own against the three tangs I've got in the tank as well, in fact, he tends to be the boss of the tank.
Edit: I will say, he isn't much of a grazer or ever has been. He is an absolute piglet but very very rarely do I ever see him pick at the rocks.