I've got a new 110 gallon tank setup and I am considering getting a tang.  What was your experience with tangs in a tank around that size, and what kind of tang did you have?  My tank is 48x18x30H.  Currently stocked with a melanaurus wrasse, 2 clowns, 2 springeri damsels, 2 anthias, and a tailspot blenny.
Tank pic 
here.
Thanks for any advise and experience!