What fish to get next?

[Bartman]

Hey! Here's a question nobody has asked before.

Seriously though, I've done a tonne of research and I've looked at dozens of fish and I still can't decide on new additions. Everytime I see something I like I go home and do some research and find a reason why I shouldn't get it. I currently have a 75G reef with a little over 100lbs of Tonga and some branch rock (lots of hiding spaces and lots of swimming room). I have mostly softies and a few LPS. Current residents are 2 x Oscellaris, 1 Foxface, 1 Royal Gramma, 1 Neon Goby (I think, don't see it too often). I am thinking I would like to add a Tang or 2 and maybe a dwarf Angel. I'm looking for a splash of colour, movement and some utility. I'm looking for suggestions as to what you might recommend. The tank has been up for a year and I do have a QT tank.