I really like goniopora and have found them pretty easy to keep. Lots of light, good water quality, and feed them. I feed mine oyster eggs, and melted cubes of Ocean Nutrition gel based food like Special Formula VHP. I also use cyclop-eeze and daphnia in my homemade frozen fish food blend so they may be eating that as well. All of mine are 2+ years old, and I have never lost one so IME they aren't all that difficult. Certainly easier than acros.
HTH