With having a 60 gallon tank I'd definitely reccomend a wrasse for either setup.. the most beautiful (as it seems with most fish lol) are not reef safe but depending on your setup there is almost always a wrasse that'll fit right in.. for a full blown reef gobies, blennys, and clowns are my favorites and with predator tanks eels, angels, lions, anglers, wrasses. One of my absolute favorite sw fish would be the marine betta and melanarus wrasse which depending on the specific fish could fit into nearly any type of setup.