If you want a Queen or a Blue, my suggestion would be buying it young. My Queen Angel has transformed from blue and white to a complete yellow-orange, and that journey takes a good two years in itself. The fish, considering it is properly stocked and cared for, won't start feeling stress for at least 4 years.
Just recognize that for the sake of the fish, one day you will need to expand tank size.
150 gallon tank. Saltwater. Live rock. Queen Angel.
& 65 gallon tank. Freshwater. Moderately planted. Rainbowfish.
& 35 gallon. Nursury. QT. Hospital. Etc...