If you can afford them the radions are the easy winner, hands down. How big of a tank do you have? After the first $750 it just gets cost prohibitive to most people....
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.