I'm with MSL--the clown tangs are gorgeous. We had one for about 9 months before he disappeared (think the lion is to blame). He was active, good feeder, very social. When we upgrade tanks, another one is on the list to add.
I too enjoy the sailfin tang. They can really make themselves look ornamental when that fin comes up. I have had mine for 2 years and he comes up to the glass and stares right at me like he is talking it is cool. Try one I think you will enjoy