There is no correct answer for that ?.When choosing corals/inverts for a tank,you should select corals that are compatible and fit the "biotope" that you plan on recreating.There are a few biotopes that can be succesfully recreated in a tank.Lagoon,reef flat,back reef slope,and an upper reef slope,as well as patch reef.The reef crest is nearly impossible to recreate due to the wave surge its subjected to.Most of your corals collected in the hobby are from the reef slopes or lagoons.A lagoon is probably the easiest to recreate and is what i would recommend.