Larger angels tend to be a bit nippy around stars, but I would say you have a better chance with a dwarf. I had a flame angel and a sand-sifting star (which spent an ample amount of time above the substrate to notice any problems between the two) in a tank together for over a year and I never had any problems. However, I was also fortunate enough to find a flame angel that didn't pick at any corals, either (although dwarf angels are said to be reef safe, it's more reportedly known your chances of getting a nipper are about 50/50).