I like to feed them in the evening after the lights have been out for a while.
For SPS, I've only used Coral Vibrance and not very often. I think the SPS get fed from the very small stuff that is in the frozen mix I feed too (home made from mixed seafood).
For LPS, a lot of them really want to be fed at night so that's when they open up, in my tank the Lobo, Candy Cane, Micromussa, Plates, Open Brain - I use a flashlight and put meaty pieces of food right down on their tentacles with my hand or sometimes with a turkey baster. Feeding at night with only a flashlight allows them to eat without the fish stealing food off them and possibly damaging them in the process. But shrimp will steal stuff off them even in the dark, so give the shrimp a nice big chunk to eat too. Watch out for crabs, might have to move them away if they are going after the food aggresively.