Actually frogspawn are known to be less hardy than others. If you do go with a euphyllia (frogspawn, hamer, torch) I would suggest trying the banching variety, this is not based on fact but it seems they are a tad hardier for some reason. I have a
branching frogspawn and it has been healthy since day one. I also have branching hammers and a torch coral. I love them all, they add a splach of color and look darn cool. If you do decide to get one I woud put it high up in your tank and keep it a good 6 inches away from other corals as they have a nasty sting (
sweeper tentacles), medium-low water flow seems to keep mine happy.
HTH