i went for a flame angel a couple of months ago and i'm happy with it so far
i heeded the advice of experienced folks like
@ca1ore who gave that advice again here, if you're going to freak out about some nips here and there, don't bother. but if you're ok with nips, then you're probably good to go.
from what i could gather, if you're going to try angels, or really any reef safe with caution fish, avoid meaty corals, acans, zoas, etc. when my little rock of acans all died, i decided to replace acans with a flame angel. i don't have any scolys/wilsonis/trachys things like that. i have a fungia plate and a space invader which he has seemingly left alone. in fact, if he wouldn't mind trimming those space invader sweepers, i'd appreciate it.
the only sps nipping i've seen is on day 2 of having him, he darted across the tank right to my frag rack to give my purple stylo a smooch. but since then, no smooches seen. i feed a lot and my tank has been up for about a year so if he gets bored he can go clean up random algae spots. one downside is my polyp extension on acros is poor, but that could be my tank or flow or something else. i'm no expert on the acro game. corals seems otherwise healthy and growing, though, so whatevs.